20-03-2018
11-03-2018
27-12-2017
Sifrol IR
Updated Patient Information Leaflet
0.25, 1 mg
April 2020
Patient leaflet in accordance with the Pharmacists' Regulations (preparations) - 1986
This medicine is to be supplied upon physician’s prescription only
Sifrol
®
0.25 mg
Sifrol
®
1 mg
Tablets
Each tablet of Sifrol 0.25 mg contains pramipexole dihydrochloride monohydrate 0.25 mg.
Each tablet of Sifrol 1 mg contains pramipexole dihydrochloride monohydrate 1 mg.
*Inactive ingredients and allergens in the medicine - see section 6, "Additional information".
Read the entire leaflet carefully before using this medicine. This leaflet contains essential
information about this medicine. If you have any further questions, refer to the physician or the
pharmacist.
This medicine has been prescribed for your treatment. Do not pass it on to others. It may harm them,
even if it seems to you that their medical condition is similar.
1.
What is this medicine intended for?
Sifrol 0.25 mg and Sifrol 1 mg are indicated for the treatment of the signs and symptoms of Parkinson's
disease (alone or
combination with levodopa).
Sifrol 0.25 mg is also indicated for treating moderate to severe symptoms of idiopathic restless legs
syndrome.
Therapeutic group:
Medicines that activate the dopamine receptor (dopaminergic medicines).
2.
Before using this medicine
Do not use this medicine if:
You are sensitive (allergic) to the active ingredient or to any of the other ingredients that this
medicine contains.
You are breastfeeding.
Special warnings regarding the use of the medicine
Before taking Sifrol, tell your physician if you have (or had) or if you develop any symptoms or
medical conditions, especially any of the following:
Kidney disease.
Hallucinations (seeing, hearing or feeling things that are not there). Most hallucinations are visual.
You suffer from dyskinesia (abnormal, uncontrolled movements of the limbs). If you have advanced
Parkinson’s disease and are taking levodopa, you might develop dyskinesia during the up-titration
of Sifrol.
You experience difficulty keeping your body and neck straight and upright (dystonia). In particular,
you may experience forward bending of the head and neck, the lower back, or sideward bending of
the back.
Sleepiness and episodes of suddenly falling asleep.
Psychosis (comparable with symptoms of schizophrenia).
Vision impairment. You should have regular eye examinations during treatment with Sifrol.
Severe heart or blood vessels disease. You should monitor your blood pressure regularly,
especially at the beginning of treatment, and this is to avoid postural hypotension (a fall in blood
pressure on standing up).
Symptoms augmentation. You may feel that your disease symptoms start earlier in the day than
usual, are more intense, and involve other limbs.
Tell your physician if you or your family or relatives notice that you are developing urges or cravings to
behave in ways that are unusual for you and you cannot resist the impulse or temptation to carry out
certain activities that could harm yourself or others. These are called impulse control disorders and can
include behaviors such as addictive gambling, excessive eating, spending, an abnormally high sex drive
or preoccupation with an increase in sexual thoughts. Your physician may need to adjust your dose or
stop the treatment.
Also, tell your physician if you or your family or relatives notice that you are developing mania (agitation,
feeling extremely elated and over-excited) or delirium (decreased awareness, confusion, loss of contact
with reality). Your physician may need to adjust your dose or stop the treatment.
Sifrol IR
Updated Patient Information Leaflet
0.25, 1 mg
April 2020
Tell your physician if you experience symptoms such as depression, apathy, anxiety, fatigue, sweating
or pain after stopping or reducing your Sifrol dose. If the symptoms persist more than a few weeks, your
physician may need to adjust your dose.
Tell your physician if you develop difficulty keeping your body and neck straight and upright. Your
physician may need to adjust your dose or change your treatment.
Children and adolescents
Sifrol is not intended for children and adolescents under the age of 18.
Tests and follow-up
Use of the medicine may cause blurred vision. You should have regular eye examinations during
treatment with Sifrol. You will also need to have your blood pressure checked regularly, especially at the
beginning of treatment (See section 2 "Special warnings regarding the use of the medicine").
Other medicines and Sifrol
If you are taking or have recently taken other medicines, including non-prescription medicines
and food supplements, tell the physician or the pharmacist. Particularly if you are taking:
Cimetidine (to treat heartburn and stomach ulcers), amantadine (to treat Parkinson’s disease),
mexiletine (to treat irregular heartbeats - a condition known as ventricular arrhythmia), zidovudine (to
treat the acquired immune deficiency syndrome, AIDS/HIV), cisplatin (to treat various types of cancers),
quinidine (used for the prevention of painful night-time leg cramps and for the treatment of a type of
malaria known as falciparum malaria), procainamide (to treat irregular heart beat).
Do not take Sifrol together with antipsychotic medicines.
If you are taking levodopa - the dose of levodopa is recommended to be reduced before you start
treatment with Sifrol.
Take care if you are using any medicines that calm you down or if you are drinking alcohol. In these
cases, the medicine may affect your ability to drive and operate dangerous machines.
Using the medicine and food
Sifrol can be taken with or without food.
Using the medicine and alcohol consumption
You should be cautious while drinking alcohol during treatment with the medicine. See above in the section "If
you are taking other medicines".
Pregnancy, breastfeeding, and fertility
If you are pregnant, think you may be pregnant, planning to have a baby or are breastfeeding, you
should consult a physician before starting to take this medicine. Your physician will discuss with you if
you should continue to take Sifrol.
The effect of Sifrol on the unborn child is not known, therefore, do not take this medicine unless your
physician tells you to do so.
Do not use this medicine during breastfeeding. Sifrol can reduce the production of breast milk. Also, the
medicine can pass into the breast milk and can reach the breastfed child. If use of Sifrol is unavoidable,
breastfeeding should be stopped.
Driving and using machines:
The medicine can cause hallucinations (hearing, seeing or feeling things that are not there). If affected by the
medicine in this manner, do not drive or operate dangerous machines.
Sifrol can cause sleepiness and
episodes of suddenly falling asleep, particularly in patients with Parkinson’s disease. If you experience these
side effects, you must not drive or operate dangerous machines. You should tell your physician if this occurs.
3.
How should you use the medicine?
Always use according to the physician's instructions. You should check with the physician or the
pharmacist if you are not sure about your dose or about how to take this medicine.
The dosage and treatment will be determined only by the physician. Do not exceed the recommended
dose.
Sifrol can be taken with or without food.
Swallow the tablet with water. There is no information about
crushing, grinding or chewing the tablet. You can cut the tablets in half, on the score line and take both
halves at the same time to make swallowing easier or according to the dosage prescribed for you by the
physician.
The usually recommended dose is:
Sifrol IR
Updated Patient Information Leaflet
0.25, 1 mg
April 2020
Parkinson’s disease:
The daily dose must be divided into 3 equal doses.
During the first week, the usual daily dose is 0.125 mg SIFROL three times a day (equivalent to 0.375
mg daily):
week
Number of tablets
Half a tablet of SIFROL 0.25 mg three times a day
Daily dose (mg)
0.375
This dose will be increased every 5-7 days as directed by your physician until your symptoms are
controlled (maintenance dose).
week
week
Number of tablets
1 tablet SIFROL 0.25 mg
three times a day
2 tablets SIFROL 0.25 mg
three times a day
Total daily dose (mg)
0.75 mg
1.5 mg
The usual maintenance dose is 1.5 mg per day. However, your dose may have to be increased even
further. If necessary, your dose may be increased up to a maximum of 4.5 mg of pramipexole (the active
ingredient) day. A lower maintenance dose of 0.375 mg a day is also possible.
Patients with kidney disease:
If you have moderate or severe kidney disease, your physician will prescribe a lower dose. In this case,
you will have to take the tablets once or twice a day. If you have moderate kidney disease, the usual
starting dose is half a tablet of Sifrol 0.25 mg twice a day. In severe kidney disease, the usual starting
dose is half a tablet Sifrol 0.25 mg once a day.
Restless Legs Syndrome
The usual dose is taken once a day, in the evening, 2-3 hours before bedtime.
During the first week, the usual dose is half a tablet of Sifrol 0.25 mg once a day (equivalent to 0.125 mg
daily):
week
Number of tablets
Half a tablet of Sifrol 0.25 mg once a day
Daily dose (mg)
0.125 mg
This dose will be increased every 4-7 days as directed by your physician until your symptoms are
controlled (maintenance dose).
week
week
week
Number of
tablets
1 tablet Sifrol 0.25 mg
2 tablets Sifrol 0.25 mg
3 tablets Sifrol 0.25 mg
Total daily
dose (mg)
0.25
0.50
0.75
The maximum daily dose should not exceed 0.75 mg of the active ingredient pramipexole.
If you stop taking your medicine for more than a few days, you must start again at the lowest dose. You
can then build up the dose again, as you did the first time. Ask your physician for advice.
Your physician will review your treatment after 3 months to decide whether or not to continue the
treatment.
Patients with kidney disease:
If you have severe kidney disease, Sifrol may not be a suitable treatment for you.
If you have accidentally taken a higher dose or if a child has accidentally swallowed the medicine, go
immediately to a physician or a hospital emergency room and bring the medicine package with you.
Taking an overdose may cause vomiting, restlessness, or any of the side effects as described in section
4, Side effects section.
If you forget to take the medicine skip the forgotten dose and take the next dose at the usual time.
Do not compensate for a forgotten dose.
Sifrol IR
Updated Patient Information Leaflet
0.25, 1 mg
April 2020
Persist with the treatment as recommended by the physician.
Even if there is an improvement in your
health, do not stop treatment with this medicine without consulting the physician or the pharmacist.
If you stop taking the medicine
Do not stop taking Sifrol without first talking to your physician. If you have to stop taking this medicine,
your physician will reduce the dose gradually to reduce the risk of worsening symptoms
If you suffer from Parkinson’s disease you should not stop treatment with this medicine abruptly. A
sudden stop could cause a
severe medical condition called neuroleptic malignant syndrome. The
symptoms of the syndrome include: loss of muscle movement (akinesia), rigid muscles, fever, unstable
blood pressure, increased heart rate (tachycardia), confusion,
depressed level of consciousness (e.g.
coma).
If you stop or reduce your Sifrol dose you may develop a medical condition called dopamine agonist
withdrawal syndrome (DAWS). The symptoms include depression, apathy, anxiety, fatigue, sweating or
pain. If you experience these symptoms you should contact your physician.
Do not take medicines in the dark! Check the label and the dose each time you take the
medicine. Wear glasses if you need them. If you have any further questions regarding the use of
this medicine, consult the physician or the pharmacist.
4.
Side Effects
As with any medicine, use of Sifrol may cause side effects in some users. Do not be alarmed by reading
the list of side effects. You may not experience any of them.
If you have Parkinson's disease you may experience the following side effects:
Very common side effects: may affect more than 1 in 10 users:
Movement disorders (e.g. abnormal, uncontrolled movements of the limbs), sleepiness, dizziness,
nausea.
Common side effects: may affect up to 1 in 10 users:
Urge to behave in an unusual way, hallucinations (hearing, seeing, or feeling things that are not there),
confusion, tiredness (fatigue), sleeplessness (insomnia), edema (mainly in the legs), headache,
hypotension (low blood pressure), abnormal dreams, constipation, visual impairment, vomiting, weight
loss including decreased appetite.
Uncommon side effects: may affect up to 1 in 100 users:
Paranoia (excessive fear for your own well-being), delusion, excessive daytime sleepiness or suddenly
falling asleep, forgetfulness, increased movements and inability to keep still (hyperkinesia), weight
increase, allergic reactions (e.g. rash, itching, hypersensitivity), fainting, *heart failure (heart problems
which can cause shortness of breath or leg edema), *syndrome of inappropriate antidiuretic hormone
(ADH) secretion, restlessness, difficulty breathing (dyspnoea), hiccups, pneumonia, delirium (decreased
awareness, confusion, losing touch with reality), inability to resist the impulse to perform an action that
could harm yourself or others. Such acts include:
Strong impulse to gamble excessively despite serious personal or family consequences.
Altered or increased sexual interest and behavior of significant concern to you or to others, for
example, an increased sexual drive.
Uncontrollable excessive shopping or spending.
*Binge eating (eating large amounts of food in a short time period) or compulsive eating (eating
more food than normal and more than is needed to satisfy your hunger).
Rare side effects: may affect up to 1 in 1000 users:
Mania, for example feeling agitated, elated and overexcited.
Side effects with unknown frequency (the frequency of these effects has not been established
yet):
After stopping or reducing your Sifrol treatment: Depression, apathy, anxiety, fatigue, sweating or
pain may occur (also known as dopamine agonist withdrawal syndrome or DAWS).
* The precise frequency is not known. These side effects were not observed in clinical studies among
2,762 patients treated with pramipexole. The frequency category for these side effects is probably not
greater than “uncommon side effects".
If you have restless legs syndrome you may experience the following side effects:
Very common side effects: may affect more than 1 in 10 users:
Nausea.
Sifrol IR
Updated Patient Information Leaflet
0.25, 1 mg
April 2020
Common side effects: may affect up to 1 in 10 users:
Changes in your sleeping pattern, such as insomnia and drowsiness, fatigue, headache, unusual dreams,
constipation, dizziness, vomiting.
Uncommon side effects: may affect up to 1 in 100 users:
*Urge to behave in an unusual way, *heart failure (problems with your heart which can cause shortness
of breath or edema in your ankles), *syndrome of inappropriate antidiuretic hormone (ADH) secretion,
movement disorders (such as uncontrollable and abnormal limb movements), *excessive body
movement and inability to keep still (hyperkinesia), *paranoia (excessive fear for your own well-being),
*delusions, *forgetfulness, hallucination (hearing, seeing or feeling things that are not there), confusion,
increased drowsiness during the day or suddenly falling asleep, weight gain, low blood pressure, edema
(mainly in the legs), allergic reactions (such as rash, itch, hypersensitivity), fainting, restlessness,
disturbed vision, weight loss with loss of appetite, difficulty breathing, hiccups, *pneumonia, mania (for
example feeling agitated, elated and overexcited), delirium (decreased awareness, confusion, losing
touch with reality), inability to resist the impulse to perform an act that may could harm yourself or
others. Such acts include:
*Strong impulse to gamble excessively despite serious personal or family consequences.
*Unusual sexual behavior and interests of significant concern to you and your environment, such as
increased sexual drive.
*Excessive, uncontrollable shopping or spending.
*Binge eating (eating large amounts over a short period of time) or compulsive eating (eating more
than usual and more than you need to satisfy your hunger).
Side effects with unknown frequency (the frequency of these effects has not been established
yet):
After stopping or reducing your Sifrol treatment: Depression, apathy, anxiety, fatigue, sweating or
pain may occur (also known as dopamine agonist withdrawal syndrome or DAWS).
* Precise frequency is unknown. These side effects did not appear in clinical trials conducted in 1,395 patients
taking pramipexole. The frequency category for these side effects is probably not greater than "uncommon side
effects".
If a side effect occurs, if any of the side effects gets worse, or if you suffer from a side effect not
mentioned in the leaflet, you should consult your physician.
Side effects can be reported to the Ministry of Health (MoH) by clicking on the "Report on side effects
due to medication therapy" link on the MoH home page (www.health.gov.il
) which refers to the online
form for side effects reporting, or by entering the link:
https://sideeffects.health.gov.il
5.
How to store the medicine?
Avoid poisoning! This medicine and any other medicine should be kept in a closed place out of the
reach and sight of children and/or infants in order to avoid poisoning. Do not induce vomiting
without an explicit instruction from your physician.
Do not use the medicine after the expiration date (exp. date) that appears on the box.
The expiration date refers to the last day of that month.
Storage conditions: Store in the original package at a temperature below 25˚C.
6.
Additional information
In addition to the active ingredient the medicine also contains –
mannitol, maize starch dried, maize starch, magnesium stearate, colloidal anhydrous silica,
povidone K25.
What does the medicine look like and what is the content of the package -
Sifrol 0.25 mg – white, oval, flat-faced, beveled-edge tablet, with a score line on both sides.
Tablets have P7 on one side, on both sides of the score line, and the symbol of Boehringer
Ingelheim embossed on the other side, on both sides of the score line.
Sifrol 1 mg – white, oval, flat-faced, beveled-edge tablet, with a score line on both sides. Tablets
have P9 on one side, on both sides of the score line, and the symbol of Boehringer Ingelheim on
the other side, on both sides of the score line.
The tablets are packed in a blister strip. Each package containing 100 tablets. Not all pack sizes
may be marketed.
Registration holder: Boehringer Ingelheim Israel Ltd., 89 Medinat Ha-Yehudim, P.O.B. 4124,
Hertzliya-Pituach 4676672.
Manufacturer name: Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim am Rhein,
Germany.
Sifrol IR
Updated Patient Information Leaflet
0.25, 1 mg
April 2020
This leaflet was revised in April 2020.
Registration number of the medicine in the National Drug Registry of the Ministry of Health:
Sifrol 0.25 mg –
30500
Sifrol 1 mg –
30501
Sifrol IR
Updated Prescribing Information
0.25 mg, 1 mg
April 2020
Product Information
Sifrol
Pramipexole
Tablets
1.
NAME OF THE MEDICINAL PRODUCT
Sifrol 0.25 mg tablets
Sifrol 1 mg tablets
2.
QUALITATIVE AND QUANTITATIVE COMPOSITION
Each Sifrol 0.25 mg tablet contains 0.25 mg pramipexole dihydrochloride monohydrate (salt form) equivalent to
0.18 mg of pramipexole base.
Each Sifrol 1 mg tablet contains 1 mg pramipexole dihydrochloride monohydrate (salt form) equivalent to 0.7 mg
of pramipexole base.
Please note:
Pramipexole doses as published in the literature refer to the salt form.
Therefore, doses will be expressed in terms of both pramipexole salt and pramipexole base (in brackets).
For a full list of excipients, see section 6.1.
3.
PHARMACEUTICAL FORM
Tablets.
The tablets are white, both faces flat with beveled edges, scored on both sides and have a code
embossed.
Strength (mg salt)
Appearance
Sifrol 0.25
Oval, code embossed (one side with code P7 and one side with the Boehringer
Ingelheim company symbol).
Sifrol 1
Round, code embossed (one side with code P9 and one side with the Boehringer
Ingelheim company symbol).
Tablets can be divided into equal halves.
4.
CLINICAL PARTICULARS
4.1
Therapeutic indications
Sifrol 0.25 mg and 1 mg
are indicated for the treatment of signs and symptoms of idiopathic Parkinson's disease,
as monotherapy or in combination with levodopa.
Sifrol 0.25 mg is also indicated
for symptomatic treatment of moderate to severe idiopathic Restless Legs
Syndrome.
4.2
Posology and method of administration
Posology
Sifrol IR
Updated Prescribing Information
0.25 mg, 1 mg
April 2020
Parkinson’s disease:
The daily dose is administered in equally divided doses 3 times a day.
Initial treatment
Doses should be increased gradually from a starting-dose of 0.375 mg salt (0.264 mg of base) per day and then
increased every 5-7 days. Providing patients do not experience intolerable undesirable effects, the dose should be
titrated to achieve a maximal therapeutic effect.
Ascending – Dose Schedule of SIFROL
Week
Dose
(mg of salt)
Total Daily Dose (mg
of salt)
Dose
(mg of base)
Total Daily Dose (mg
of base)
3 x 0.125
0.375
3 x 0.088
0.264
3 x 0.25
0.75
3 x 0.18
0.54
3 x 0.5
3 x 0.35
If a further dose increase is necessary the daily dose should be increased by 0.75 mg of salt (0.54 mg base) at
weekly intervals up to a maximum dose of 4.5 mg of salt (3.3 mg of base) per day.
However, it should be noted that the incidence of somnolence is increased at doses higher than 1.5 mg (of salt)
per day (see section 4.8).
Maintenance treatment
The individual dose of pramipexole should be in the range of 0.375 mg salt (0.264 mg base) to a maximum of 4.5
mg salt (3.3 mg base) per day. During dose escalation in pivotal studies
,
efficacy was observed starting at a daily
dose of 1.5 mg salt (1.1 mg base). Further dose adjustments should be done based on the clinical response and the
occurrence of adverse reactions. In clinical trials approximately 5% of patients were treated at doses below 1.5
mg salt (1.1 mg base). In advanced Parkinson's disease, pramipexole doses higher than 1.5 mg salt (1.1 mg base)
per day can be useful in patients where a reduction of the levodopa therapy is intended. It is recommended that
the dose of levodopa is reduced during both the dose escalation and the maintenance treatment with SIFROL,
depending on reactions in individual patients (see section 4.5).
Treatment discontinuation
Abrupt discontinuation of dopaminergic therapy can lead to the development of a neuroleptic malignant
syndrome
or a dopamine agonist withdrawal syndrome. Pramipexole should be tapered off at a rate of 0.75 mg
salt (0.54 mg base) per day until the daily dose has been reduced to 0.75 mg salt (0.54 mg base). Thereafter the
dose should be reduced by 0.375 mg salt (0.264 mg base) per day (see section 4.4). Dopamine agonist withdrawal
syndrome could still appear while tapering and a temporary increase of the dose could be necessary before
resuming tapering (see section 4.4)
Renal impairment
The elimination of pramipexole is dependent on renal function. The following dose schedule is suggested for
initiation of therapy:
Patients with a creatinine clearance above 50 ml/min require no reduction in daily dose or dosing frequency.
In patients with a creatinine clearance between 20 and 50 ml/min, the initial daily dose of SIFROL should be
administered in two divided doses, starting at 0.125 mg salt (0.088 mg base) twice a day (0.25 mg salt/0.176 mg
base daily). A maximum daily dose of 2.25 mg salt (1.57 mg base) should not be exceeded.
Sifrol IR
Updated Prescribing Information
0.25 mg, 1 mg
April 2020
In patients with a creatinine clearance less than 20 ml/min, the daily dose of SIFROL should be administered in a
single dose, starting at 0.125 mg salt (0.088 mg base) daily. A maximum daily dose of 1.5 mg salt (1.1 mg base)
should not be exceeded.
If renal function declines during maintenance therapy the SIFROL daily dose should be reduced by the same
percentage as the decline in creatinine clearance, i.e. if creatinine clearance declines by 30%, then the SIFROL
daily dose should be reduced by 30%. The daily dose can be administered in two divided doses if creatinine
clearance is between 20 and 50 ml/min and as a single daily dose if creatinine clearance is less than 20 ml/min.
Hepatic impairment
Dose adjustment in patients with hepatic failure is probably not necessary, as approx. 90% of absorbed active
substance is excreted through the kidneys. However, the potential influence of hepatic insufficiency on SIFROL
pharmacokinetics has not been investigated.
Paediatric population
The safety and efficacy of SIFROL in children below 18 years has not been established. There is no relevant use
of SIFROL in the paediatric population in Parkinson’s Disease.
Restless Legs Syndrome:
The recommended starting dose of SIFROL is 0.125 mg salt (0.088 mg base) taken once daily 2-3 hours before
bedtime. For patients requiring additional symptomatic relief, the dose may be increased every 4-7 days to a
maximum of 0.75 mg salt (0.54 mg base) per day (as shown in the table below).
Dose Schedule of SIFROL
Titration Step
Once Daily Evening Dose (mg of
salt)
Once Daily Evening Dose
base)
0.125
0.088
0.25
0.18
0.50
0.35
0.75
0.54
* if needed
Patient´s response should be evaluated after 3 months treatment and the need for treatment continuation should be
reconsidered. If treatment is interrupted for more than a few days it should be re-initiated by dose titration carried
out as above.
Treatment discontinuation
Since the daily dose for the treatment of Restless Legs Syndrome will not exceed 0.75 mg salt (0.54 mg base)
SIFROL can be discontinued without tapering off. In a 26 week placebo controlled trial, rebound of RLS
symptoms (worsening of symptom severity as compared to baseline) was observed in 10% of patients (14 out of
135) after abrupt discontinuation of treatment. This effect was found to be similar across all doses.
Renal impairment
The elimination of pramipexole is dependent on renal function. Patients with a creatinine clearance above 20
ml/min require no reduction in daily dose.
The use of SIFROL has not been studied in haemodialysis patients, or in patients with severe renal impairment.
Hepatic impairment
Dose adjustment in patients with hepatic failure is not required, as approx. 90% of absorbed active substance is
excreted through the kidneys.
Sifrol IR
Updated Prescribing Information
0.25 mg, 1 mg
April 2020
Paediatric population
SIFROL is not recommended for use in children and adolescents below 18 years due to a lack of data on safety
and efficacy.
Tourette Disorder
Paediatric population
SIFROL is not recommended for use in children and adolescents below 18 years since the efficacy and safety has
not been established in this population. SIFROL should not be used in children or adolescents with Tourette
Disorder because of a negative benefit-risk balance for this disorder (see section 5.1).
Method of administration
The tablets should be taken orally, swallowed with water, and can be taken either with or without food.
4.3
Contraindications
Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.
4.4
Special warnings and precautions for use
When prescribing SIFROL in a patient with Parkinson's disease with renal impairment a reduced dose is
suggested in line with section 4.2.
Hallucinations
Hallucinations are known as a side effect of treatment with dopamine agonists and levodopa. Patients should be
informed that (mostly visual) hallucinations can occur.
Dyskinesia
In advanced Parkinson's disease, in combination treatment with levodopa, dyskinesia can occur during the initial
titration of SIFROL. If they occur, the dose of levodopa should be decreased.
Dystonia
Axial dystonia including antecollis, camptocormia and pleurothotonus (Pisa Syndrome) has occasionally been
reported in patients with Parkinson’s disease following initiation or incremental dose increase of pramipexole.
Although dystonia may be a symptom of Parkinson’s disease, the symptoms in these patients have improved after
reduction or withdrawal of pramipexole. If dystonia occurs, the dopaminergic medication regimen should be
reviewed and an adjustment in the dose of pramipexole considered.
Sudden onset of sleep and somnolence
Pramipexole has been associated with somnolence and episodes of sudden sleep onset, particularly in patients
with Parkinson's disease. Sudden onset of sleep during daily activities, in some cases without awareness or
warning signs, has been reported uncommonly. Patients must be informed of this and advised to exercise caution
while driving or operating machines during treatment with SIFROL. Patients who have experienced somnolence
and/or an episode of sudden sleep onset must refrain from driving or operating machines. Furthermore a reduction
of the dose or termination of therapy may be considered. Because of possible additive effects, caution should be
advised when patients are taking other sedating medicinal products or alcohol in combination with pramipexole
(see sections 4.5, 4.7 and section 4.8).
Impulse control disorders
Patients should be regularly monitored for the development of impulse control disorders. Patients and carers
should be made aware that behavioural symptoms of impulse control disorders including
pathological gambling,
increased libido, hypersexuality, compulsive spending or buying, binge eating and compulsive eating can occur in
patients treated with dopamine agonists, including SIFROL. Dose reduction/tapered discontinuation should be
considered if such symptoms develop.
Sifrol IR
Updated Prescribing Information
0.25 mg, 1 mg
April 2020
Mania and delirium
Patients should be regularly monitored for the development of mania and delirium. Patients and carers should be
made aware that mania and delirium can occur in patients treated with pramipexole. Dose reduction/tapered
discontinuation should be considered if such symptoms develop.
Patients with psychotic disorders
Patients with psychotic disorders should only be treated with dopamine agonists if the potential benefits outweigh
the risks.
Co-administration of antipsychotic medicinal products with pramipexole should be avoided (see section 4.5).
Ophthalmologic monitoring
Ophthalmologic monitoring is recommended at regular intervals or if vision abnormalities occur.
Severe cardiovascular disease
In case of severe cardiovascular disease, care should be taken. It is recommended to monitor blood pressure,
especially at the beginning of treatment, due to the general risk of postural hypotension associated with
dopaminergic therapy.
Neuroleptic malignant syndrome
Symptoms suggestive of neuroleptic malignant syndrome have been reported with abrupt withdrawal of
dopaminergic therapy (see section 4.2).
Dopamine agonist withdrawal syndrome (DAWS)
DAWS has been reported with dopamine agonists, including pramipexole (see section 4.8). To discontinue
treatment in patients with Parkinson’s disease, pramipexole should be tapered off (see section 4.2). Limited data
suggests that patients with impulse control disorders and those receiving high daily dose and/or high cumulative
doses of dopamine agonists may be at higher risk for developing DAWS. Withdrawal symptoms may include
apathy, anxiety, depression, fatigue, sweating and pain and do not respond to levodopa. Prior to tapering off and
discontinuing pramipexole, patients should be informed about potential withdrawal symptoms. Patients should be
closely monitored during tapering and discontinuation. In case of severe and/or persistent withdrawal symptoms,
temporary re-administration of pramipexole at the lowest effective dose may be considered.
Augmentation
Reports in the literature indicate that treatment of Restless Legs Syndrome with dopaminergic medicinal products
can result in augmentation. Augmentation refers to the earlier onset of symptoms in the evening (or even the
afternoon), increase in symptoms, and spread of symptoms to involve other extremities. Augmentation was
specifically investigated in a controlled clinical trial over 26 weeks. Augmentation was observed in 11.8% of
patients in the pramipexole group (N = 152) and 9.4% of patients in the placebo group (N = 149). Kaplan-Meier
analysis of time to augmentation showed no significant difference between pramipexole and placebo groups.
4.5
Interaction with other medicinal products and other forms of interaction
Plasma protein binding
Pramipexole is bound to plasma proteins to a very low (< 20%) extent, and little biotransformation is seen in man.
Therefore, interactions with other medicinal products affecting plasma protein binding or elimination by
biotransformation are unlikely. As anticholinergics are mainly eliminated by biotransformation, the potential for
an interaction is limited, although an interaction with anticholinergics has not been investigated. There is no
pharmacokinetic interaction with selegiline and levodopa.
Inhibitors/competitors of active renal elimination pathway
Cimetidine reduced the renal clearance of pramipexole by approximately 34%, presumably by inhibition of the
cationic secretory transport system of the renal tubules. Therefore, medicinal products that are inhibitors of this
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active renal elimination pathway or are eliminated by this pathway, such as cimetidine, amantadine, mexiletine,
zidovudine, cisplatin, quinine, and procainamide, may interact with pramipexole resulting in reduced clearance of
pramipexole. Reduction of the pramipexole dose should be considered when these medicinal products are
administered concomitantly with SIFROL.
Combination with levodopa
When SIFROL is given in combination with levodopa, it is recommended that the dose of levodopa is reduced
and the dose of other anti-parkinsonian medicinal products is kept constant while increasing the dose of SIFROL.
Because of possible additive effects, caution should be advised when patients are taking other sedating medicinal
products or alcohol in combination with pramipexole (see sections 4.4, 4.7 and 4.8).
Antipsychotic medicinal products
Co-administration of antipsychotic medicinal products with pramipexole should be avoided (see section 4.4), e.g.
if antagonistic effects can be expected.
4.6
Fertility, pregnancy and lactation
Pregnancy
The effect on pregnancy and lactation has not been investigated in humans. Pramipexole was not teratogenic in
rats and rabbits, but was embryotoxic in the rat at maternotoxic doses (see section 5.3). SIFROL should not be
used during pregnancy unless clearly necessary, i.e. if the potential benefit justifies the potential risk to the foetus.
Breast-feeding
As pramipexole treatment inhibits secretion of prolactin in humans, inhibition of lactation is expected. The
excretion of pramipexole into breast milk has not been studied in women. In rats, the concentration of active
substance-related radioactivity was higher in breast milk than in plasma.
In the absence of human data, SIFROL should not be used during breast-feeding. However, if its use is
unavoidable, breast-feeding should be discontinued.
Fertility
No studies on the effect on human fertility have been conducted. In animal studies, pramipexole affected oestrous
cycles and reduced female fertility as expected for a dopamine agonist. However, these studies did not indicate
direct or indirect harmful effects with respect to male fertility.
4.7
Effects on ability to drive and use machines
SIFROL can have a major influence on the ability to drive and use machines.
Hallucinations or somnolence can occur.
Patients being treated with SIFROL and presenting with somnolence and/or sudden sleep episodes must be
informed to refrain from driving or engaging in activities where impaired alertness may put themselves or others
at risk of serious injury or death (e.g. operating machines) until such recurrent episodes and somnolence have
resolved (see also sections 4.4, 4.5 and 4.8).
4.8
Undesirable effects
Based on the analysis of pooled placebo-controlled trials, comprising a total of 1,923 patients on pramipexole and
1,354 patients on placebo, adverse drug reactions were frequently reported for both groups. 63% of patients on
pramipexole and 52% of patients on placebo reported at least one adverse drug reaction.
The majority of adverse drug reactions usually start early in therapy and most tend to disappear even as therapy is
continued.
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Within the system organ classes, adverse reactions are listed under headings of frequency (number of patients
expected to experience the reaction), using the following categories: very common (≥ 1/10); common (≥ 1/100 to
< 1/10); uncommon (≥ 1/1,000 to < 1/100); rare (≥ 1/10,000 to < 1/1,000); very rare (< 1/10,000); not known
(cannot be estimated from the available data).
Parkinson's disease
, most common adverse reactions
The most commonly (
5%) reported adverse drug reactions in patients with Parkinson's disease more frequent
with pramipexole treatment than with Placebo were nausea, dyskinesia, hypotension, dizziness, somnolence,
insomnia, constipation, hallucination, headache and fatigue. The incidence of somnolence is increased at doses
higher than 1.5 mg pramipexole salt per day (see section 4.2.). A more frequent adverse drug reaction in
combination with levodopa was dyskinesia. Hypotension may occur at the beginning of treatment, especially if
pramipexole is titrated too fast.
Table 1: Parkinson’s disease
Body System
Very common
(≥1/10)
Common
(≥1/100 to
<1/10)
Uncommon
(≥1/1,000 to
< 1/100)
Rare
(≥1/10,000
To <1/1,000)
Not known
Infections and
infestations
pneumonia
Endocrine
disorders
inappropriate
antidiuretic
hormone
secretion
Psychiatric
disorders
Insomnia,
Hallucinations,
abnormal
dreams,
confusion,
behavioural
symptoms of
impulse control
disorders and
compulsions
compulsive
shopping,
pathological
gambling,
restlessness,
hypersexuality,
delusion,
libido disorder,
paranoia,
delirium,
binge eating
hyperphagia
mania
Nervous system
disorders
Somnolence,
Dizziness,
Dyskinesia
headache
sudden onset of
sleep,
amnesia,
hyperkinesia,
syncope
Eye disorders
visual
impairment
including
diplopia,
vision
blurred,
visual acuity
reduced
Cardiac
disorders
cardiac failure
Vascular
disorders
hypotension
Respiratory,
thoracic, and
mediastinal
disorders
Dyspnoea,
hiccups
Gastrointestinal
disorders
nausea
Constipation,
vomiting
Skin and
Hypersensitivity,
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subcutaneous
tissue disorders
Pruritus,
rash
General
disorders and
administration
site conditions
Fatigue,
peripheral
oedema
Dopamine
agonist
withdrawal
syndrome
including
apathy,
anxiety,
depression,
fatigue,
sweating
and pain.
Investigations
weight decrease
including
decreased
appetite
weight increase
This side effect has been observed in post-marketing experience. With 95 % certainty, the frequency category is not greater than
uncommon, but might be lower. A precise frequency estimation is not possible as the side effect did not occur in a clinical trial database of
2,762 patients with Parkinson’s Disease treated with pramipexole.
Restless Legs Syndrome, most common adverse reactions
The most commonly (
5%) reported adverse drug reactions in patients with Restless Legs Syndrome treated
with Pramipexole were nausea, headache, dizziness and fatigue. Nausea and fatigue were more often reported in
female patients treated with SIFROL (20.8% and 10.5%, respectively) compared to males (6.7% and 7.3%,
respectively).
Table 2: Restless Legs Syndrome
Body
System
Very common
(≥1/10)
Common
(≥1/100 to
<1/10)
Uncommon (≥1/1,000 to <
1/100)
Not known
Infections and
infestations
pneumonia
Endocrine
disorders
inappropriate antidiuretic
hormone secretion
Psychiatric
disorders
Insomnia,
abnormal
dreams
Restlessness, confusion,
hallucinations, libido disorder,
delusion
, hyperphagia
, paranoia
, mania
, delirium
, behavioural
symptoms of impulse control
disorders and compulsions
(such
compulsive shopping,
pathological gambling,
hypersexuality, binge eating)
Nervous
system
disorders
Headache,
dizziness,
somnolence
sudden onset of sleep, syncope,
dyskinesia, amnesia
hyperkinesia
Eye disorders
visual impairment
including visual acuity,
reduced diplopia,
vision blurred
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Cardiac
disorders
cardiac failure
Vascular
disorders
Hypotension
Respiratory,
thoracic, and
mediastinal
disorders
Dyspnoea, hiccups
Gastrointestina
l disorders
nausea
constipation,
vomiting
Skin and
subcutaneous
tissue disorders
Hypersensitivity, pruritus, rash
General
disorders and
administration
site conditions
fatigue
peripheral oedema
Dopamine
agonist
withdrawal
syndrome
including
apathy, anxiety,
depression,
fatigue,
sweating and
pain
Investigations
weight decrease including
decreased appetite
weight increase
1 This side effect has been observed in post-marketing experience. With 95 % certainty, the frequency category is not
greater than uncommon, but might be lower. A precise frequency estimation is not possible as the side effect did not occur
in a clinical trial database of 1,395 patients with Restless Legs Syndrome treated with pramipexole
Description of selected adverse reactions
Somnolence
Pramipexole is commonly associated with somnolence and has been associated uncommonly with excessive
daytime somnolence and sudden sleep onset episodes (see also section 4.4).
Libido disorders
Pramipexole may uncommonly be associated with libido disorders (increased or decreased).
Impulse control disorders
Pathological gambling, increased libido, hypersexuality, compulsive spending or buying, binge eating and
compulsive eating can occur in patients treated with dopamine agonists including SIFROL (see section 4.4).
In a cross-sectional, retrospective screening and case-control study including 3,090 Parkinson’s disease patients,
13.6% of all patients receiving dopaminergic or non-dopaminergic treatment had symptoms of an impulse control
disorder during the past six months. Manifestations observed include pathological gambling, compulsive
shopping, binge eating, and compulsive sexual behaviour (hypersexuality). Possible independent risk factors for
impulse control disorders included dopaminergic treatments and higher doses of dopaminergic treatment, younger
age ( ≤ 65 years), not being married and self-reported family history of gambling behaviours.
Dopamine agonist withdrawal syndrome
Non-motor adverse effects may occur when tapering or discontinuing dopamine agonists including
pramipexole. Symptoms include apathy, anxiety, depression, fatigue, sweating and pain (see section
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4.4).
Cardiac failure
In clinical studies and post-marketing experience cardiac failure has been reported in patients with pramipexole.
In a pharmacoepidemiological study pramipexole use was associated with an increased risk of cardiac failure
compared with non-use of pramipexole (observed risk ratio 1.86; 95% CI, 1.21-2.85).
You can report side effects to the Ministry of Health by following the link ‘Reporting Side Effects of Drug
Treatment' on the Ministry of Health home page (www.health.gov.il) which links to an online form for reporting
side effects. You can also use this link:
https://sideeffects.health.gov.il
4.9
Overdose
There is no clinical experience with massive overdose. The expected adverse reactions would be those related to
the pharmacodynamic profile of a dopamine agonist, including nausea, vomiting, hyperkinesia, hallucinations,
agitation and hypotension. There is no established antidote for overdose of a dopamine agonist. If signs of central
nervous system stimulation are present, a neuroleptic agent may be indicated. Management of the overdose may
require general supportive measures, along with gastric lavage, intravenous fluids, administration of activated
charcoal and electrocardiogram monitoring.
5.
PHARMACOLOGICAL PROPERTIES
5.1
Pharmacodynamic properties
Pharmacotherapeutic group: anti-Parkinson drugs, dopamine agonists, ATC code: N04BC05.
Mechanism of action
Pramipexole is a dopamine agonist that binds with high selectivity and specificity to the D2 subfamily of
dopamine receptors of which it has a preferential affinity to D
receptors, and has full intrinsic activity.
Pramipexole alleviates Parkinsonian motor deficits by stimulation of dopamine receptors in the striatum. Animal
studies have shown that pramipexole inhibits dopamine synthesis, release, and turnover.
The mechanism of action of pramipexole as treatment for Restless Legs Syndrome is unknown.
Neuropharmacological evidence suggests primary dopaminergic system involvement.
Pharmacodynamic effects
In human volunteers, a dose-dependent decrease in prolactin was observed. . In a clinical trial with healthy
volunteers, where SIFROL prolonged-release tablets were titrated faster (every 3 days) than recommended up to
4.5 mg of salt (3.15 mg pramipexole base) per day, an increase in blood pressure and heart rate was observed.
Such effect was not observed in patient studies.
Clinical efficacy and safety
in Parkinson's disease
In patients pramipexole alleviates signs and symptoms of idiopathic Parkinson's disease.
Placebo controlled clinical trials included approximately 1,800 patients of Hoehn and Yahr stages
I –V treated with pramipexole. Out of these, approximately 1,000 were in more advanced stages, received
concomitant levodopa therapy, and suffered from motor complications.
In early and advanced Parkinson's disease, efficacy of pramipexole in controlled clinical trials was maintained for
approximately six months. In open continuation trials lasting for more than three years there were no signs of
decreasing efficacy.
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In a controlled double blind clinical trial of 2 year duration
,
initial treatment with pramipexole significantly
delayed the onset of motor complications, and reduced their occurrence compared to initial treatment with
levodopa. This delay in motor complications with pramipexole should be balanced against a greater improvement
in motor function with levodopa (as measured by the mean change in UPDRS-score). The overall incidence of
hallucinations and somnolence was generally higher in the escalation phase with the pramipexole group.
However, there was no significant difference during the maintenance phase. These points should be considered
when initiating pramipexole treatment in patients with Parkinson's disease.
Clinical efficacy and safety
in Restless Legs Syndrome
The efficacy of pramipexole was evaluated in four placebo-controlled clinical trials in approximately 1,000
patients with moderate to very severe idiopathic Restless Legs Syndrome.
The mean change from baseline in the Restless Legs Syndrome Rating Scale (IRLS) and the Clinical Global
Impression-Improvement (CGI-I) were the primary efficacy outcome measures. For both primary endpoints
statistically significant differences have been observed for the pramipexole dose groups 0.25 mg, 0.5 mg and 0.75
mg pramipexole salt in comparison to placebo. After 12 weeks of treatment the baseline IRLS score improved
from 23.5 to 14.1 points for placebo and from 23.4 to 9.4 points for pramipexole (doses combined). The adjusted
mean difference was -4.3 points (CI 95% -6.4; -2.1 points, p-value <0.0001). CGI-I responder rates (improved,
very much improved) were 51.2% and 72.0% for placebo and pramipexole, respectively (difference 20% CI 95%:
8.1%; 31.8%, p<0.0005). Efficacy was observed with 0.125 mg salt (0.088 mg base) per day after the first week
of treatment.
In a placebo-controlled polysomnography study over 3 weeks SIFROL significantly reduced the number of
periodic limb movements during time in bed.
Longer term efficacy was evaluated in a placebo-controlled clinical trial. After 26 weeks of treatment, there was
an adjusted mean reduction in IRLS total score of 13.7 and 11.1 points in the pramipexole and placebo group,
respectively, with a statistically significant (p = 0.008) mean treatment difference of -2.6. CGI-I responder rates
(much improved, very much improved) were 50.3% (80/159) and 68.5% (111/162) for placebo and pramipexole,
respectively (p = 0.001), corresponding to a number needed to treat (NNT) of 6 patients (95%CI: 3.5, 13.4).
Clinical efficacy and safety
in Tourette Disorder
The efficacy of pramipexole (0.0625-0.5 mg/day) with paediatric patients aged 6-17 years with Tourette Disorder
was evaluated in a 6-week, double-blind, randomised, placebo-controlled flexible dose study. A total of 63
patients were randomised (43 on pramipexole, 20 on placebo). The primary endpoint was change from baseline
on the Total Tic Score (TTS) of the Yale Global Tic Severity Scale (YGTSS). No difference was observed for
pramipexole as compared to placebo for either the primary endpoint or for any of the secondary efficacy
endpoints including YGTSS total score, Patient Global Impression of Improvement (PGI-I), Clinical Global
Impression of Improvement (CGI-I), or Clinical Global Impressions of Severity of Illness (CGI-S). Adverse
events occurring in at least 5% of patients in the pramipexole group and more common in the pramipexole-treated
patients than in patients on placebo were: headache (27.9%, placebo 25.0%), somnolence (7.0%, placebo 5.0%),
nausea (18.6%, placebo 10.0%), vomiting (11.6%, placebo 0.0%), upper abdominal pain (7.0%, placebo 5.0%),
orthostatic hypotension (9.3%, placebo 5.0%), myalgia (9.3%, placebo 5.0%), sleep disorder (7.0%, placebo
0.0%), dyspnoea (7.0%, placebo 0.0%) and upper respiratory tract infection (7.0%, placebo 5.0%). Other
significant adverse events leading to discontinuation of study medication for patients receiving pramipexole were
confusional state, speech disorder and aggravated condition (see section 4.2).
5.2
Pharmacokinetic properties
Absorption
Pramipexole is rapidly and completely absorbed following oral administration. The absolute bioavailability is
greater than 90% and the maximum plasma concentrations occur between 1 and 3 hours. Concomitant
administration with food did not reduce the extent of pramipexole absorption, but the rate of absorption was
reduced. Pramipexole shows linear kinetics and a small inter-patient variation of plasma levels.
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Distribution
In humans, the protein binding of pramipexole is very low (< 20%) and the volume of distribution is large (400 l).
High brain tissue concentrations were observed in the rat (approx. 8-fold compared to plasma).
Biotransformation
Pramipexole is metabolised in man only to a small extent.
Elimination
Renal excretion of unchanged pramipexole is the major route of elimination.
Approximately 90% of
C-labelled dose is excreted through the kidneys while less than 2% is found in the
faeces. The total clearance of pramipexole is approximately 500 ml/min and the renal clearance is approximately
400 ml/min. The elimination half-life (t½) varies from 8 hours in the young to 12 hours in the elderly.
5.3
Preclinical safety data
Repeated dose toxicity studies showed that pramipexole exerted functional effects, mainly involving the CNS and
female reproductive system, and probably resulting from an exaggerated pharmacodynamic effect of
pramipexole.
Decreases in diastolic and systolic pressure and heart rate were noted in the minipig, and a tendency to a
hypotensive effect was discerned in the monkey.
The potential effects of pramipexole on reproductive function have been investigated in rats and rabbits.
Pramipexole was not teratogenic in rats and rabbits but was embryotoxic in the rat at maternally toxic doses. Due
to the selection of animal species and the limited parameters investigated, the adverse effects of pramipexole on
pregnancy and male fertility have not been fully elucidated.
A delay in sexual development (i.e., preputial separation and vaginal opening) was observed in rats. The
relevance for humans is unknown.
Pramipexole was not genotoxic. In a carcinogenicity study, male rats developed Leydig cell hyperplasia and
adenomas, explained by the prolactin-inhibiting effect of pramipexole. This finding is not clinically relevant to
man. The same study also showed that, at doses of 2 mg/kg (salt) and higher, pramipexole was associated with
retinal degeneration in albino rats. The latter finding was not observed in pigmented rats, nor in a 2-year albino
mouse carcinogenicity study or in any other species investigated.
6.
PHARMACEUTICAL PARTICULARS
6.1
List of excipients
Mannitol, maize starch, anhydrous colloidal silica, povidone K25, magnesium stearate
6.2
Incompatibilities
Not applicable
6.3
Special precautions for storage
Store in the original package below 25
6.4
Nature and contents of container
OPA/aluminium/PVC-aluminium blisters.
10 tablets per aluminum blister strips
Cartons containing 10 blister strips (100 tablets)
6.5
Special precautions for disposal and other handling
No special requirements
7.
Manufacturer
Boehringer Ingelheim Pharma
KG, Ingelheim am Rhein, Germany.
Sifrol IR
Updated Prescribing Information
0.25 mg, 1 mg
April 2020
Registration holder
Boehringer Ingelheim Israel Ltd., 89 Medinat Ha-Yehudim St., P.O. Box 4124,
Herzliya Pituach 4676672.
Registration Numbers
Sifrol 0.25 mg
126 17 30500
Sifrol 1 mg
126 16 30501
Revised in April 2020.