17-01-2021
" עעבקנהזןולעטמרופ " קדבנונכותותואירבהדרשמי רשואו ." רשואמןולע : לירפא 2012
“This leaflet format has beendeterminedbytheMinistryof Health and the content thereof has
been checked and approved.” Date of approval: April 2012.
PHYSICIANS’ PRESCRIBING INFORMATION
ESTROGENUS
(synthetic conjugated estrogens, B) Tablets
TABLETS
ESTROGENS INCREASE THE RISK OF ENDOMETRIAL CANCER
Close clinical surveillance of all women takingestrogens is important. Adequate diagnostic
measures, including endometrial sampling when indicated, should be undertaken to rule out
malignancy in all cases of undiagnosed persistent or recurringabnormal vaginal bleeding. There
is no evidence that the use of “natural” estrogens results in a different endometrial risk profile
than synthetic estrogens atequivalent estrogen doses. (SeeWARNINGS, Malignant
neoplasms,Endometrialcancer.)
CARDIOVASCULAR AND OTHER RISKS
Estrogens with or without progestins should not be used for the prevention of cardiovascular
disease or dementia. (SeeCLINICAL STUDIESandWARNINGS, Cardiovascular disorders
andDementia.)
The estrogen alone substudy of the Women’s HealthInitiative (WHI) reported increased risks of
stroke and deep vein thrombosis (DVT) inpostmenopausal women (50 to 79 years of age)
during 6.8 years and 7.1 years, respectively, oftreatment with oral conjugated estrogens (CE
0.625 mg) alone per day, relative to placebo. (SeeCLINICAL STUDIESandWARNINGS,
Cardiovascular disorders.)
The estrogen-plus-progestin substudy of the WHI reported increased risks of myocardial
infarction, stroke, invasive breast cancer, pulmonary emboli, and deep vein thrombosis in
postmenopausal women (50 to 79 years of age) during 5.6 years of treatment with oral
conjugated estrogens (CE 0.625 mg) combinedwith medroxyprogesterone acetate (MPA 2.5
mg) per day, relative to placebo. (SeeCLINICAL STUDIES,andWARNINGS,
Cardiovascular disordersandMalignant neoplasms,Breast cancer).
The Women’s Health Initiative Memory Study (WHIMS), a substudy of WHI study, reported
increased risk of developing probable dementiain postmenopausal women 65 years of age or
older during 5.2 years of treatment with CE 0.625mgalone and during 4 years of treatment with
CE 0.625 mg combined with MPA 2.5 mg, relative to placebo. It is unknown whether this
finding applies to younger postmenopausal women. (SeeCLINICALSTUDIES,WARNINGS,
DementiaandPRECAUTIONS, Geriatric Use.)
Other doses of conjugatedestrogens and medroxyprogesteroneacetate,and other combinations
and dosage forms of estrogens and progestins, werenot studied in the WHI clinical trials, and in
the absence of comparable data, these risks should be assumed to be similar.Because of these
risks, estrogens with or withoutprogestins should be prescribed atthe lowest effective doses and
for the shortest duration consistent with treatment goals and risks for the individual woman.
DESCRIPTION
ESTROGENUS (synthetic conjugated estrogens,B) tabletscontainablend of ten (10)
synthetic estrogenic substances.The estrogenic substances are: sodiumestrone sulfate,
sodiumequilin sulfate,sodium17α-dihydroequilin sulfate, sodium17α-estradiol sulfate,
sodium17β-dihydroequilinsulfate,sodium17α-dihydroequilenin sulfate, sodium 17β-
dihydroequilenin sulfate, sodiumequilenin sulfate, sodium17β-estradiol sulfate, and
sodiumΔ 8,9 -dehydroestrone sulfate.
The structural formulae for these estrogens are:
ESTROGENUS tablets for oral administration are available in 0.3 mg, 0.45 mg, 0.625
mg, 0.9 mgand 1.25 mg strengths of syntheticconjugated estrogens, B. These tablets
contain the following inactiveingredients: ascorbyl palmitate, butylated hydroxyanisole,
colloidal silicon dioxide, edetate disodium dehydrate, plasticized ethylcellulose,
hypromellose, lactose monohydrate*, magnesium stearate, purified water, iron oxide red,
titaniumdioxide, polyethylene glycol, polysorbate80,triacetate andtriacetin/glycerol. In
addition, the 0.45 mg tablets contain iron oxideblack and iron oxide yellow; the 0.9 mg
tablets also contain D&C yellow no. 10 aluminumlake, FD&C blue no. 1 aluminum lake
and FD&C yellow no. 6 aluminum lake; and the 1.25 mgtablets contain iron oxide
yellow.
* Amountof lactose
Estrogenus 0.3 mg: 46.7 mg/tablet.
Estrogenus 0.45 mg: 38.4mg/tablet.
Estrogenus 0.625 mg:106.4 mg/tablet.
Estrogenus 0.9 mg: 99 mg/tablet.
Estrogenus 1.25 mg: 89.4mg/tablet.
CLINICALPHARMACOLOGY
Endogenous estrogens are largely responsiblefor the development and maintenance of
the female reproductive system and secondary sexual characteristics. Although
circulating estrogens exist in a dynamicequilibriumof metabolic interconversions,
estradiol is the principal intracellular humanestrogen andis substantially more potent
than its metabolites, estrone and estriol, at the receptor level.
The primary source of estrogen in normally cycling adult women is the ovarian follicle,
which secretes 70 to 500 mcg of estradiol daily, depending on the phase of the menstrual
cycle. After menopause, most endogenousestrogen is produced by conversion of
androstenedione, secreted by the adrenal cortex, to estrone by peripheral tissues. Thus,
estrone and the sulfate-conjugated form, estronesulfate, are the most abundant circulating
estrogens in postmenopausal women.
Estrogens act through binding tonuclear receptors in estrogen-responsive tissues. To
date, two estrogen receptors have been identified. These varyin proportion fromtissue to
tissue.
Circulating estrogens modulate the pituitarysecretion of the gonadotropins, luteinizing
hormone (LH) and follicle-stimulating hormone (FSH), through a negative feedback
mechanism. Estrogens act to reduce theelevated levels of these hormones in
postmenopausal women.
A. Absorption
Synthetic conjugated estrogens, B are solubleinwater and are well absorbed from the
gastrointestinal tractafter release fromthe drug formulation. ESTROGENUS tablets
release synthetic conjugatedestrogens, B slowly over a period of several hours. Table 1
and Table 2 summarize the mean pharmacokinetic parameters for unconjugated (free) and
conjugated (total) estrogens following singleadministration of two 0.625 mg tablets to 21
healthy postmenopausal women under fastingconditions. The effect of food on the
bioavailability of synthetic conjugatedestrogens, B following administration of
ESTROGENUS tablets has not been studied.However, the presence of food did not
significantlyaffect the pharmacokinetics of asimilar formulation of synthetic conjugated
estrogens, B.
Table 1. Mean Pharmacokinetic Parameters of Unconjugated (Free) Estrogens
Following a Single Dose of 2 x 0.625 mg ESTROGENUS Tablets Under Fasting
Conditions*
C
max
(pg/mL) t
max
(hr) t
1/2
(hr) AUC
0-48h
(pg hr/mL)
Baseline-corrected estrone
(% CV) 75.87
(39) 9.29
(25) 23.46
(59) 1601.59
(41)
Equilin
(% CV) 41.94
(49) 8.38
(27) 15.09
(55) 707.21
(46)
max = peakplasmaconcentration; t
max =time peak concentrationoccurs;t
1/2 =apparentterminal-phase disposition half-
life.AUC
0-48h =total area underthe concentration-time curve from time zero to time oflast quantifiable concentration
(48h); *Δ 8,9 Dehydroestrone(free)levels werebelow theassay limit of quantitation; CV= Coefficientof Variance
Table 2. Mean Pharmacokinetic Parametersof Conjugated (Total) Estrogens
Following a Single Dose of 2 x 0.625mg ESTROGENUS Tablets Under Fasting
Conditions
C
max t
max
(h) (ng/mL) t
1/2
(h) AUC
0-48h
(ng h/mL)
Baseline-corrected
estrone
(% CV) 3.74
(29) 8.00
(27) 14.26
(26) 62.03
(34)
Equilin
(% CV) 3.69
(44) 8.05
(36) 11.28
(28) 58.25
(53)
Dehydroestrone
(%CV) 0.74
(32) 7.55
(37) 14.14
(26) 12.93
(39)
C
max = peakplasmaconcentration; t
max =timepeak concentrationoccurs;t
1/2 = apparentterminal-phase disposition
half-life; AUC
0-48h = totalareaunder theconcentration-timecurvefromtimezerototime oflast quantifiable
concentration (48h); CV= Coefficient ofVariance
B. Distribution
The distribution of exogenous estrogens issimilar to that of endogenous estrogens.
Estrogens are widely distributed in the body and are generally found in higher
concentrations in the sex hormone target organs. Estrogens circulate in the blood largely
bound to sex hormone binding globulin (SHBG) and albumin.
C. Metabolism
Exogenous estrogens are metabolized in the samemanner as endogenous estrogens.
Circulating estrogens exist in a dynamic equilibriumof metabolic interconversions.
These transformations take place mainly in the liver. Estradiol is converted reversibly to
estrone, and both can be converted to estriol,which is the major urinary metabolite.
Estrogens also undergo enterohepatic recirculation via sulfate and glucuronide
conjugation in the liver, biliary secretion ofconjugates into the intestine, and hydrolysis
in the intestine followed by reabsorption. In postmenopausal women, a significant
portion of the circulating estrogens exists as sulfate conjugates, especially estrone sulfate,
which serves as a circulating reservoir for the formation of more active estrogens.
D. Excretion
Estradiol, estrone, and estriolare excreted in the urine alongwith glucuronide and sulfate
conjugates. The mean (SD) apparentterminal elimination half-life (t
) of conjugated
estrone is 14 (± 6) hours and conjugated equilin is 11 (± 6) hours.
E. Special Populations
No pharmacokinetic studies were conductedin special populations, including patients
with renal or hepatic impairment.
F. Drug Interactions
In vitroandin vivostudies have shown that estrogens are metabolized partiallyby
cytochromeP450 3A4 (CYP3A4). Therefore, inducers orinhibitors of CYP3A4 may
affect estrogen drug metabolism. Inducers of CYP3A4, such as St. John’s Wort
preparations(Hypericumperforatum), phenobarbital, carbamazepine, and rifampin, may
reduce plasmaconcentrations of estrogens, possibly resulting in a decrease intherapeutic
effects and/or changes in the uterine bleeding profile. Inhibitors of CYP3A4, such as
erythromycin, clarithromycin, ketoconazole, itraconazole, ritonavir, and grapefruit juice,
may increase plasma concentrationsof estrogens and may result in side effects.
CLINICALSTUDIES
Effects on Vasomotor Symptoms
A randomized, double-blind, placebo-controlled, dose-ranging, multi-center clinical study
was conducted to evaluate the safety and effectiveness of ESTROGENUS tablets for the
treatment of vasomotor symptoms in281 naturally or surgicallypostmenopausal women
aged 26 to 65 years whowere experiencing aminimum of seven moderate to severe hot
flushes per day or 50 per week at randomization. The majority (81%) of patients were
Caucasian (n=228) and 17.4% were Black (n=49). Patients were randomized to receive
ESTROGENUS tablets 0.3 mg,0.625 mg, 1.25 mg, or placebo once daily for 12 weeks.
ESTROGENUS (0.3 mg, 0.625 mg and 1.25 mgtablets) was shown to be statistically
better than placeboat weeks 4and 12 for relief of both thefrequency and severity of
moderate to severe vasomotor symptoms(Table 3 and 4).
Table 3. Mean Number and Mean Change in Number of Moderate to Severe
Hot FlushesPer Week ITT Population With LOCF
0.3 mg
n=66 0.625 mg
n=71 1.25mg
n=69 Placebo
n=70
Baseline
Mean(SD) 104.3(57.7) 97.3(82.1) 86.8(42.1) 96.4(58.2)
Week 4
Mean(SD) 47.0(52.9) 23.3(26.9) 24.6(47.0) 57.8(47.5)
MeanChange from
Baseline(SE) -49.8 (5.2) -72.8 (5.0) -68.3 (5.1) -37.2 (5.0)
p-valueversusplacebo0.005 <0.001 <0.001---
Week 12
Mean(SD) 30.7(47.7) 12.2(18.7) 12.4(26.3) 47.5(49.8)
MeanChange from
Baseline(SE) -66.3 (4.6) -84.6 (4.4) -82.6 (4.5) -48.3 (4.5)
p-valueversusplacebo <0.001<0.001<0.001 ---
ITT= Intenttotreat;LOCF= LastObservation Carried Forward, SD= StandardDeviation;SE= Standard
Error
Table 4. Mean Change in Severity of Moderate to Severe Hot Flushes Per
Week, ITT Population with LOCF
0.3 mg
n=66 0.625 mg
n=71 1.25mg
n=69 Placebo
n=70
Baseline
Mean(SD) 2.5 (0.3) 2.5 (0.3) 2.5 (0.3) 2.5 (0.3)
Week 4
Mean(SD) 2.1 (0.8) 1.9 (1.0) 1.5 (1.1) 2.2 (0.8)
MeanChange from
Baseline(SE) -0.5(0.1) -0.6(0.1) -1.0(0.1) -0.3(0.1)
p-valueversusplacebo0.0360.002 <0.001---
Week 12
Mean(SD) 1.5 (1.2) 1.1 (1.2) 1.0 (1.1) 1.9 (1.1)
MeanChange from
Baseline(SE) -1.0(0.1) -1.4(0.1) -1.5(0.1) -0.6(0.1)
p-valueversusplacebo 0.023 <0.001 <0.001---
ITT= Intenttotreat;LOCF= LastObservation Carried Forward, SD= StandardDeviation;SE= Standard
Error
Effects on Vulvar and Vaginal Atrophy
A randomized, double-blind, placebo-controlled, multi-center clinical study was
conducted to evaluate the safety and effectiveness of ESTROGENUS 0.3 mg tablets for
the treatment of symptomsof vulvar and vaginal atrophy in 248 naturally or surgically
postmenopausal women between 32 to 81 yearsof age (mean 58.6 years) who at baseline
had≤5% superficial cells on a vaginal smear, a vaginal pH > 5.0, and who identified
their most bothersome moderate to severesymptomof vulvar and vaginal atrophy.
The majority (82%) of the women wereCaucasian(n=203),11%wereHispanic
(n=26), 4%were Black (n=9) and3%were Asian (n=6). All patients were assessedfor
improvement in the mean change from baseline to Week 12 for three co-primary efficacy
variables: most bothersomesymptomof vulvar and vaginal atrophy (defined as the
moderate tosevere symptomthat had beenidentified bythe patient as most bothersome
to her at baseline); percentage of vaginalsuperficial cells and percentage of vaginal
parabasal cells; and vaginal pH.
In this study, a statistically significant meanchange between baseline and week 12 for the
group treated with ESTROGENUS 0.3 mg tablets comparedto placebowas observed for
the symptoms, vaginal dryness and pain withintercourse. See Table 5. ESTROGENUS
0.3 mg tablets increased superficial cells bya mean of 17.1% ascompared to 2.0% for
placebo (statistically significant). A corresponding statistically significant mean
reduction frombaseline in parabasal cells(41.7% for ESTROGENUS0.3 mg tablets and
6.8% for placebo) was observed at week 12.The mean reduction between baseline and
week 12 in the pH was 1.69 in the ESTROGENUS 0.3 mg tabletsgroup and 0.45 in the
placebo group (statistically significant).
Table 5. Change from Baseline to Week 12in the Severity of Vaginal Dryness and
Pain with Intercourse,SymptomsThat Were Identified by the Menopausal Study
Patient as Her Most Bothersome Symptom of Vulvar and Vaginal Atrophy at
Baseline
Most Bothersome Symptom at
Baseline* ESTROGENUS
0.3 mg Placebo
Vaginal Dryness
n56 54
Baseline Severity 2.52 2.54
Mean Severity at Week 12 0.80 1.81
Mean Change in Severity from
Baseline (s.d.) -1.71 (0.85)
-0.72 (0.66)
p-value vs. placebo <0.001 ---
Pain With Intercourse
n35 40
Baseline Severity 2.74 2.70
Mean Severity at Week 12 0.94 1.95
Mean Change in Severity from
Baseline (s.d.) -1.80 (1.02) -0.75 (0.95)
p-value vs. placebo <0.001
---
* Treatment differences assessedby ANCOVA orrank ANCOVA (% cell data)
with baseline as covariate for the modified intent-to-treat population, last-
observation-carried-forward data set.
Women’s Health Initiative Studies
The WHI enrolled approximately 27,000 predominantly healthy postmenopausal women
in two substudiesto assess the risks and benefits of eitherthe use of oral conjugated
estrogens (CE 0.625 mg) alone per day orin combination with medroxyprogesterone
acetate (CE 0.625 mg/MPA 2.5 mg) per daycompared toplacebointhe prevention of
certain chronic diseases. The primary endpoint was the incidence of coronary heart
disease (CHD) (nonfatal myocardial infarction (MI), silent MI and CHD death), with
invasive breast cancer as the primary adverse outcomestudied. A “global index”
includedthe earliest occurrence ofCHD, invasive breast cancer, stroke, pulmonary
embolism(PE), endometrial cancer (only inthe estrogen plusprogestin substudy),
colorectal cancer, hip fracture, or death duetoother causes. Thestudy did not evaluate
the effects of CE or CE/MPA on menopausal symptoms.
The estrogen-alone substudy was stopped earlybecause anincreased risk of stroke was
observed and it was deemed that no further information would be obtained regarding the
risks and benefits of estrogenalone in predetermined primary endpoints. Results of the
estrogen-alone substudy, which included 10,739women (average age of 63 years, range
50 to 79; 75.3% White, 15.1% Black, 6.1% Hispanic, 3.6% Other), after an average
follow-up of 6.8 years are presented in Table 6.
Table 6:Relative And Absolute Risk Seen InThe Estrogen-Alone Substudy Of WHI a
Placebo
n = 5,429 CE
n = 5,310 Event Relative Risk
CE vs. Placebo
(95% nCI a ) Absolute Risk per 10,000
Women-Years
CHD events b 0.95 (0.79- 1.16) 56 53
Nonfatal MI b
0.91 (0.73-1.14) 43 40
CHD death b
1.01(0.71- 1.43) 16 16
Stroke c 1.39 (1.10-1.77) 32 44
Deep vein thrombosis b,d 1.47 (1.06-2.06) 15 23
Pulmonary embolism b 1.37 (0.90-2.07) 10 14
Invasive breast cancer b 0.80 (0.62-1.04) 34 28
Colorectal cancer c 1.08 (0.75-1.55) 16 17
Hip fracture c 0.61 (0.41-0.91) 17 11
Vertebral fractures c,d 0.62 (0.42-0.93) 17 11
Total fractures c,d 0.70 (0.63-0.79) 195 139
Death due to other causes c,e 1.08 (0.88-1.32) 50 53
Overall mortality c,d 1.04 (0.88-1.32) 7881
Global index c,f 1.01 (0.91-1.12) 190 192
Nominal confidence intervals unadjusted for multiple looks andmultiple comparisons
Results arebasedon centrally adjudicateddata for an averagefollow-upof7.1 years
Resultsare basedonanaverage follow-upof6.8years
d Not includedinGlobalIndex
e All deaths, except frombreast or colorectalcancer,definite/probable CHD, PE orcerebrovascular disease
f A subsetof the eventswas combinedin a “global index”,defined as theearliest occurrenceofCHD events,
invasivebreastcancer, stroke,pulmonaryembolism, colorectal cancer, hip fracture,ordeath due toother
causes
For those outcomes included in the WHI“global index” that reached statistical
significance, the absolute excess risk per10,000 women-years in the group treated with
estrogen-alone was 12 more strokes, whilethe absolute risk reduction per 10,000 women-
years was6fewer hip fractures. The absoluteexcess riskof eventsincluded in the
“global index” was a nonsignificant 2 events per 10,000 women-years. There was no
difference between the groups in termsof all-cause mortality. (See BOXED
WARNINGS, WARNINGS, and PRECAUTIONS.)
Final centrally adjudicated results for CHD events and centrally adjudicated resultsfor
invasive breast cancer incidence fromtheestrogen-alone substudy, after an average
follow-up of 7.1 years, reported no overall difference for primary CHD events (nonfatal
MI, silentMI andCHD death)and invasive breast cancer incidence in women receiving
CE alone compared with placebo (see Table 6).
The estrogen-plus-progestin substudy wasalso stopped early because,according tothe
predefined stopping rule, after an averagefollow-up of 5.2 years of treatment, the
increased riskof breast cancer and cardiovascular events exceeded the specified benefits
included in the “global index.” The absolute excess risk ofevents included in the “global
index” was 19 per 10,000 women-years (RR 1.15, 95% nCI 1.03-1.28).
For those outcomes included in the WHI“global index” that reached statistical
significance after 5.6 yearsof follow-up, the absoluteexcess risks per 10,000 women-
years in the group treated with CE/MPA were6 more CHD events, 7 more strokes, 10
more PEs, and 8 more invasive breast cancers, while the absolute riskreductionsper
10,000 women-years were 7 fewer colorectalcancers and 5 fewerhip fractures. (See
BOXED WARNINGS, WARNINGS, and PRECAUTIONS.)
Results of the estrogen-plus-progestin substudy, which included 16,608 women (average
age of 63 years, range 50 to 79; 83.9%White, 6.8% Black, 5.4% Hispanic, 3.9% Other)
are presented in Table 7 below.
Table 7. Relative And Absolute Risk Seen inthe Estrogen-Plus Progestin Substudy of WHI
at an Average of 5.6 Years a
Placebo
n = 8102 CE/MPA
n = 8506 Event Relative Risk
CE/MPA vs. Placebo
(95% nCI b )
Absolute Risk per 10,000
Women-Years
CHD events 1.24 (1.00-1.54) 33 39
Non-fatal MI 1.28 (1.00-1.63) 25 31
CHD death 1.10 (0.70-1.75) 8 8
All strokes 1.31 (1.02-1.68) 24 31
Ischemic stroke 1.44 (1.09 -1.90) 18 26
Deep vein thrombosis 1.95 (1.43 – 2.67) 13 26
Pulmonary embolism 2.13 (1.45-3.11) 8 18
Invasive breast cancer c 1.24 (1.01-1.54)33 41
Invasive colorectalcancer0.56 (0.38-0.81) 16 9
Endometrial cancer 0.81 (0.48-1.36) 7 6
Cervical cancer 1.44 (0.47-4.42) 1 2
Hip fracture 0.67 (0.47-0.96) 16 11
Vertebral fractures 0.65 (0.46-0.92) 17 11
Lower arm/wrist fractures 0.71 (0.59-0.85) 62 44
Total fractures 0.76 (0.69-0.83) 199 152
a Results arebasedoncentrally adjudicateddata. Mortality data wasnotpart of the adjudicateddata;
however,dataat5.2 yearsoffollow-upshowednodifference betweenthegroups in terms ofall-cause
mortality(RR0.98, 95% nCI 0.82-1.18)
Nominal confidence intervals unadjusted for multiple looks andmultiple comparisons
c Includes metastatic andnon-metastaticbreast cancer,withtheexception ofin situbreast cancer
Women’s Health Initiative Memory Study
The estrogen-alone Women’s Health Initiative Memory Study (WHIMS), a substudy of
WHI study, enrolled 2,947 predominantly healthy postmenopausal women 65 years of
age and older (45% were age 65 to 69 years,36% were 70 to 74 years, and 19% were 75
years of age and older) to evaluate the effects of conjugated estrogens (CE 0.625 mg)on
the incidence of probable dementia (primary outcome) compared with placebo.
After an average follow-up of 5.2 years, 28women in the estrogen-alone group (37 per
10,000 women-years) and 19 in the placebogroup (25 per 10,000 women-years) were
diagnosed with probable dementia. The relative risk of probable dementia in the
estrogen-alone group was 1.49 (95% CI 0.83-2.66)compared to placebo. It is unknown
whether these findingsapply to younger postmenopausal women. (See BOXED
WARNINGS, WARNINGS, Dementia and PRECAUTIONS, Geriatric Use.)
The estrogen-plus-progestin WHIMS substudy enrolled 4,532 predominantly healthy
postmenopausal women 65 years ofage and older (47% were aged65 to 69 years, 35%
were 70 to 74 years, and 18% were 75 years of age andolder)to evaluate the effects of
CE 0.625 mg plus MPA 2.5 mg onthe incidence of probable dementia (primary outcome)
compared with placebo.
After an average follow-up of 4 years, 40 women in the estrogen plus progestin group (45
per 10,000 women-years) and 21 in the placebo group (22 per 10,000 women-years) were
diagnosed with probable dementia. The relative risk of probable dementia in the
hormone therapy group was 2.05 (95% CI 1.21-3.48) compared to placebo. Differences
between groups becameapparent inthe first year of treatment. It is unknown whether
these findings apply to younger postmenopausal women. (See BOXED WARNING,
WARNINGS, Dementia, and PRECAUTIONS, Geriatric Use.)
When data fromthe two populations were pooled as planned in the WHIMS protocol, the
reported overall relative risk for probabledementia was 1.76 (95% CI 1.19-2.60). It is
unknown whether these findings apply toyounger postmenopausal women. (See
BOXED WARNING, WARNINGS, Dementia, and PRECAUTIONS, Geriatric Use.)
INDICATIONS AND USAGE
ESTROGENUS 0.3 mgtablets are indicated in the:
1.Treatment of moderate to severe vasomotor symptoms associated with
menopause.
2.Treatment of moderate to severe vaginal dryness and pain with intercourse,
symptomsof vulvar and vaginal atrophy,associated withmenopause. When
prescribing solely for the treatment ofmoderate to severe vaginal dryness and
pain with intercourse, topical vaginal products should be considered.
ESTROGENUS 0.45 mg, 0.625 mg, 0.9 mg and 1.25 mgtablets are indicated in the
treatment ofmoderate to severe vasomotor symptoms associated with menopause.
CONTRAINDICATIONS
ESTROGENUS tablets should not be usedin women with any of the following
conditions:
1.Undiagnosed abnormal genital bleeding.
2.Known, suspected, or historyof cancer of the breast.
3.Known or suspected estrogen-dependent neoplasia.
4.Active deep vein thrombosis, pulmonary embolism or a history of these conditions.
5.Active orrecent (e.g.,within the past year) arterial thromboembolic disease (e.g.,
stroke, myocardial infarction).
6.Liver dysfunction or disease.
7.Known hypersensitivity tothe ingredients of ESTROGENUS Tablets.
8.Known or suspected pregnancy. Thereis no indication for ESTROGENUS in
pregnancy. There appears to be little or noincreased risk ofbirth defects in children
born to women who have used estrogens and progestins fromoral contraceptives
inadvertently during early pregnancy. (See PRECAUTIONS.)
WARNINGS
See BOXED WARNINGS.
1.Cardiovascular disorders
Estrogen and estrogen/progestintherapies havebeen associated with an increased risk
of cardiovascular eventssuch as myocardialinfarction and stroke, as well as venous
thrombosis and pulmonary embolism (venous thromboembolism(VTE)). Should any
of these occur or be suspected, estrogens should be discontinued immediately.
Risk factors for arterial vascular disease (e.g., hypertension,diabetes mellitus,
tobaccouse, hypercholesterolemia, and obesity) and/or venous thromboembolism
(e.g., personal history or family history of VTE, obesity, and systemic lupus
erythematosus) should be managed appropriately.
a. Stroke
In the estrogen-alone substudy of the Women’s Health Initiative(WHI) study,
statistically significant increased riskofstroke was reported in women receiving
CE 0.625 mg daily compared to womenreceiving placebo (44 versus 32 per
10,000 women-years). The increase in riskwas demonstrated in year 1 and
persisted. (See CLINICAL STUDIES).
In the estrogen-plus-progestin substudyof WHIstudy, a statistically significant
increased risk of stroke was reported in women receiving CE/MPA 0.625 mg/2.5
mg daily compared to women receiving placebo (31 vs. 24per 10, 000women-
years). The increase inriskwas demonstratedafter the first yearand persisted.
(SeeCLINICAL PHARMACOLOGY, CLINICAL STUDIES.)
b.Coronary heart disease
In the estrogen-alone substudy of WHI, no overall effect on coronary heart
disease (CHD) events (defined as non-fatal MI, silent MI or death due to CHD)
was reported in women receiving estrogen alone compared to placebo. (See
In the estrogen-plus-progestin substudy of the WHI study, no statistically
significant increase of CHD events wasreported inwomen receivingCE/MPA
compared to women receiving placebo (39 versus 33 per 10,000 women-years).
An increasein relativeriskwas demonstratedin year 1,and a trend toward
decreasing relative risk wasreported in years 2 through 5.
In postmenopausal women with documented heart disease (n = 2,763, average age
66.7 years), a controlled clinical trial ofsecondary prevention of cardiovascular
disease (Heart and Estrogen/ProgestinReplacement Study (HERS)) treatment
with CE/MPA (0.625 mg/2.5 mgper day) demonstrated no cardiovascular benefit.
During an average follow-up of 4.1 years,treatment with CE/MPA did not reduce
the overall rate of CHD events in postmenopausal women with established
coronary heart disease. There were more CHD events in the CE/MPA-treated
group thanin the placebo group inyear 1,but not during the subsequent years.
Participationin an open label extensionof the original HERS trial (HERS II) was
agreed to by 2,321 women. Average follow-up in HERS II was an additional 2.7
years, for a total of 6.8 years overall.Rates of CHD events were comparable
among women in the CE/MPA group andthe placebo group in HERS, HERS II,
and overall.
Large doses of estrogen (5 mgconjugatedestrogens per day), comparable to those
used to treat cancerofthe prostate and breast, have been shown in a large
prospective clinical trialin men to increase the risks of nonfatal myocardial
infarction, pulmonary embolism,and thrombophlebitis.
c.Venous thromboembolism
In the estrogen-alone substudy of WHIthe risk of VTE (DVT and pulmonary
embolism[PE]), was reportedto beincreased for women taking conjugated
equine estrogens (30 vs. 22 per 10,000 women-years), althoughonly the increased
risk of DVT reached statistical significance (23 vs. 15 per 10,000 women years).
The increasein VTE riskwas demonstrated during the first year. (See CLINICAL
STUDIES.)
In the estrogen-plus-progestin substudy ofWHI, a statistically significant 2-fold
greater rate of VTE wasreported in women receiving CE/MPA compared to
women receiving placebo (35 vs. 17 per10,000 women-years). Statistically
significant increases in risk for both DVT (26 vs. 13 per 10,000 women-years)
and PE (18 vs. 8 per 10,000 women-years)were also demonstrated. The increase
in VTE risk was demonstrated during the first yearand persisted.
If feasible, estrogens should be discontinued at least 4 to 6 weeks before surgery
of the type associated with an increased risk of thromboembolism,or during
periods of prolonged immobilization.
2.Malignant neoplasms
a.Endometrialcancer
The use of unopposed estrogens in women withintact uteri has been associated with
an increased risk of endometrial cancer. The reported endometrial cancer risk among
unopposed estrogen users is about 2- to 12-times greater than in non-users, and
appears dependent on duration of treatmentand on estrogen dose. Most studies show
no significant increased risk associated withuse of estrogens for less than 1 year. The
greatest risk appears associated with prolonged use, withincreased risks of 15- to 24-
fold for 5 to 10 years or more. This risk hasbeenshown to persist for at least 8 to 15
years after estrogen therapy is discontinued.
Clinicalsurveillance ofall women taking estrogen/progestin combinations is
important. Adequate diagnostic measures, including endometrial sampling when
indicated, should be undertaken to rule outmalignancy in all cases of undiagnosed
persistent or recurring abnormal vaginal bleeding. There is no evidence that the use
of natural estrogens resultsin adifferent endometrial risk profile than synthetic
estrogens of equivalent estrogen dose. Adding a progestin to estrogen therapy has
been shown to reduce the risk of endometrial hyperplasia, whichmay be a precursor
to endometrial cancer.
b.Breast cancer
In somestudies, the use of estrogensand progestins by postmenopausal women has
been reported to increase the risk of breast cancer. The most important randomized
clinical trial providing information about this issue is the Women's Health Initiative
(WHI) (seeCLINICAL STUDIES). The results fromobservational studies are
generally consistentwiththose oftheWHI clinical trial.
Observational studieshave also reportedan increased risk of breast cancer for
estrogen-plus-progestincombination therapy,and a smaller increased risk for
estrogen-alone therapy, after several years of use. For bothfindings, the excess risk
increased with duration of use, and appearedto return to baseline over about five
years after stopping treatment (only the observational studies have substantial data on
risk after stopping). In these studies,the risk of breast cancer was greater, and became
apparentearlier, withestrogen-plus-progestin combination therapy as compared to
estrogen-alone therapy. However, these studies have not found significant variation in
the risk of breast cancer among differentestrogens or among different estrogen-plus-
progestin combinations, doses, orroutes of administration.
In the estrogen-alone substudy of WHI, after an averageof 7.1 years of follow-up, CE
(0.625 mgdaily) was not associated with anincreased risk of invasive breast cancer
(RR 0.80, 95% nCI 0.62-1.04).
Inthe estrogen-plus-progestinsubstudy, after a mean follow-up of 5.6 years, the WHI
substudy reported an increasedrisk of breast cancer. Inthis substudy, prior use of
estrogen alone or estrogen-plus-progestincombination hormone therapy was reported
by 26% of the women. The relative risk of invasive breast cancer was 1.24 (95% nCI
1.01-1.54), and the absolute risk was 41 vs. 33 cases per 10,000 women-years, for
estrogen plus progestin compared withplacebo, respectively. Among women who
reported prior use of hormone therapy, the relative risk of invasive breast cancer was
1.86, and the absolute risk was 46 vs. 25 cases per 10,000 women-years, for estrogen
plus progestin compared with placebo.Among women who reported no prior use of
hormone therapy, the relative risk of invasive breast cancer was1.09, and the absolute
risk was 40 vs. 36 cases per 10,000 women-years for estrogen plus progestin
compared with placebo.In the WHI trial,invasive breast cancers were larger and
diagnosed at a more advanced stage in the estrogen-plus-progestin group compared
with the placebo group. Metastatic disease was rare, with no apparent difference
between the two groups. Other prognostic factors, such as histologic subtype, grade
and hormone receptor status did not differ between the groups.
The use of estrogen alone and estrogen plus progestin has been reported to result in an
increase in abnormal mammograms requiring further evaluation.
All women should receive yearly breast examinations by a healthcare provider and
performmonthly breast self-examinations.In addition, mammography examinations
should be scheduled based on patient age, risk factors, and prior mammogramresults.
3. Dementia
In the estrogen-alone Women's Health InitiativeMemory Study (WHIMS), a
substudy of WHI, a populationof 2,947 hysterectomized women aged 65 to 79 years
was randomized to CE (0.625 mgdaily) orplacebo. In the estrogen-plus-progestin
WHIMS substudy, a population of 4,532 postmenopausal women aged 65 to 79 years
was randomized to CE/MPA (0.625mg/2.5 mg daily) or placebo.
In the estrogen-alone substudy, after anaverage follow-up of 5.2 years, 28 women in
the estrogen-alone group and 19 women in the placebo group were diagnosed with
probable dementia. The relative risk of probable dementia for CE alone vs. placebo
was 1.49 (95% CI 0.83-2.66). The absolute riskof probable dementia for CE alone vs.
placebo was 37 vs. 25 cases per 10,000 women-years.
In the estrogen-plus-progestin substudy, after an average follow-up of four years, 40
women in the estrogen-plus-progestin group and 21 women in the placebo group were
diagnosed with probable dementia. Therelative risk of probable dementia for
estrogen plus progestin vs. placebo was 2.05(95% CI 1.21-3.48). The absolute risk
of probable dementia for CE/MPA vs. placebo was 45 vs. 22 cases per 10,000
women-years.
When data fromthe two populations were pooled as planned in the WHIMS protocol,
the reported overall relative risk forprobable dementia was 1.76 (95% CI 1.19-2.60).
Since both substudies were conducted in women aged 65 to 79 years, it is unknown
whether these findings apply to younger postmenopausal women. (See BOXED
WARNINGS and PRECAUTIONS, and Geriatric Use.)
4. Gallbladder disease
A two- to four-fold increase in therisk ofgallbladder disease requiring surgery in
postmenopausal women receivingestrogens has been reported.
5. Hypercalcemia
Estrogen administration may lead to severehypercalcemia in patientswith breast
cancer and bone metastases. If hypercalcemia occurs, use of the drug should be
stopped and appropriate measures takento reduce the serumcalciumlevel.
6. Visual abnormalities
Retinal vascular thrombosis has been reported in patients receiving estrogens.
Discontinue medication pending examination ifthere is sudden partial or complete
loss of vision, or a sudden onset of proptosis, diplopia, or migraine. If examination
reveals papilledemaor retinal vascularlesions, estrogens should be permanently
discontinued.
PRECAUTIONS
A.General
1.Addition of a progestin whena woman has not had a hysterectomy
Studies of the addition of a progestin for10 or more days of a cycle of estrogen
administration, or daily with estrogen ina continuous regimen, have reported a
lowered incidence of endometrial hyperplasia thanwould be induced by estrogen
treatment alone. Endometrial hyperplasia may bea precursor to endometrial
cancer.
There are, however, possible risks that may be associated with the use of
progestins with estrogenscompared to estrogen-alone regimens. These include: a
possible increased risk of breast cancer,adverse effects on lipoprotein metabolism
(e.g., lowering HDL, raising LDL) and impairment of glucose tolerance.
2.Elevated blood pressure
Ina small number of case reports, substantial increases in blood pressure have
been attributed to idiosyncratic reactionsto estrogens. In a large, randomized,
placebo-controlled clinical trial, a generalized effect of estrogens on blood
pressure was not seen. Blood pressure should be monitored at regular intervals
with estrogen use.
3.Hypertriglyceridemia
In patientswith pre-existinghypertriglyceridemIa, estrogen therapymay be
associated with elevations ofplasma triglycerides leadingto pancreatitis and other
complications.
4.Impaired liver function and past history ofcholestatic jaundice
Estrogens may be poorly metabolized in patients with impaired liver function.
For patients with a history of cholestatic jaundice associated with past estrogen
use or with pregnancy,cautionshould be exercised and inthe caseof recurrence,
medication should be discontinued.
5.Hypothyroidism
Estrogen administrationleads to increasedthyroid-binding globulin (TBG) levels.
Patients with normal thyroid function cancompensate for the increased TBG by
making more thyroid hormone, thus maintaining free T
andT
serum
concentrations in the normal range. Patients dependent on thyroid hormone
replacement therapy who arealso receiving estrogens may require increased doses
of their thyroid replacement therapy. These patients should have their thyroid
function monitored to maintain theirfree thyroid hormone levels in an acceptable
range.
6.Fluid retention
Estrogens may cause somedegree of fluidretention. Because of this, patients who
have conditions that might be influenced bythis factor, such as a cardiac or renal
dysfunction, warrant careful observation when estrogens are prescribed.
7.Hypocalcemia
Estrogens should be used with caution inindividuals with severe hypocalcemia.
8.Ovarian cancer
The estrogen-plus-progestin substudy ofWHIreported that after an average
follow-up of 5.6 years, therelative risk for ovarian cancer for estrogen plus
progestin vs. placebo was 1.58 (95% nCI 0.77 – 3.24), but was not statistically
significant. The absolute risk for estrogen plus progestin vs. placebo was 4.2 vs.
2.7 cases per 10,000 women-years. In someepidemiologic studies, the use of
estrogen only products, in particular for10 or more years, has been associated
with an increased risk ofovarian cancer. Other epidemiologic studies have not
found these associations.
9.Exacerbation of endometriosis
Endometriosis may be exacerbated withadministration of estrogens. Malignant
transformation of residual endometrialimplants has been reported in women
treated post-hysterectomy with estrogen-alone therapy. For patients known to
have residual endometriosis post-hysterectomy, the addition of progestin should
be considered.
10.Exacerbation of other conditions
Estrogensmay cause an exacerbation ofasthma, diabetes mellitus,epilepsy,
migraine, porphyria, systemic lupus erythematosus, and hepatic hemangiomas and
should be used with caution inwomen with these conditions.
B. Information for Patients
Physicians are advised to discuss thePATIENT INFORMATIONleaflet with
patients for whomthey prescribe ESTROGENUS tablets.
C. Laboratory Tests
Estrogen administration should be initiated at the lowest dose approved for the
indication and then guided by clinicalresponse rather than by serumhormone
levels (e.g., estradiol, FSH).
D. Drug/Laboratory Test Interactions
1.Acceleratedprothrombin time, partial thromboplastin time, and platelet
aggregation time; increased platelet count;increased factors II, VII antigen,
VIII antigen,VIII coagulant activity,IX, X, XII, VII-X complex, II-VII-X
complex, and beta-thromboglobulin; decreased levels of anti-factor Xa and
antithrombin III, decreased antithrombin IIIactivity; increasedlevels of
fibrinogen and fibrinogen activity;increased plasminogen antigen and
activity.
2.Increased thyroid-binding globulin (TBG) levels leading to increased
circulating total thyroid hormone levels as measured by protein-bound iodine
(PBI), T
levels (by column or by radioimmunoassay) or T
levels by
radioimmunoassay. T
resin uptake is decreased,reflecting the elevated TBG.
Free T
and free T
concentrations are unaltered. Patients on thyroid
replacement therapy may require higher doses of thyroid hormone.
3.Other binding proteins may be elevatedin serum, (i.e., corticosteroid binding
globulin (CBG), sex hormone binding globulin (SHBG)) leading to increased
total circulating corticosteroids and sex steroids, respectively. Free hormone
concentrations may be decreased. Other plasma proteins may be increased
(angiotensinogen/renin substrate, alpha-1-antitrypsin, ceruloplasmin).
4.Increased plasmaHDL and HDL
cholesterol subfraction concentrations,
reduced LDL cholesterol concentration, increased triglyceride levels.
5.Impaired glucose tolerance.
6.Reduced response to metyrapone test.
E.Carcinogenesis, Mutagenesis, Impairment ofFertility
SeeBOXED WARNINGS, WARNINGSandPRECAUTIONS.
Long-termcontinuous administration of natural and synthetic estrogens in certain
animal species increases the frequency ofcarcinomas of the breast,uterus,cervix,
vagina, testis, and liver.
F. Pregnancy
ESTROGENUS tablets should not be used during pregnancy. (See
CONTRAINDICATIONS.)
G. Nursing Mothers
Estrogen administration to nursing mothers has been shown to decrease the
quantity and quality of the milk. Detectable amounts of estrogens have been
identified in the milk of mothers receiving this drug. Caution should be exercised
when ESTROGENUS is administered to a nursing woman.
H. Pediatric Use
The safetyand efficacyof ESTROGENUS tablets in pediatricpatients has not been
established.
I. Geriatric Use
Clinicalstudies ofESTROGENUS did not include sufficient numbers of subjects
aged 65 and over to determine whether they respond differently from younger
subjects.
Of the total number of subjects in the estrogen-alonesubstudy of the WHI study,
46 percent (n = 4,943) were 65 years and older, while 7.1 percent (n = 767) were
75 years and older. There was a higher relative risk (CE versusplacebo) of stroke
in women less than 75 years of age compared to women 75 years and over.
In the estrogen-alone substudy of WHIMS, a substudy of WHI, a population of
2,947 hysterectomized women, aged 65 to 79years, was randomized to CE (0.625
per day) or placebo. After an average follow-up of 5.2 years, the relativerisk (CE
vs. placebo)of probable dementia was 1.49 (95% CI 0.83-2.66). The absolute
risk of developing probable dementia withestrogen alone was 37 vs. 25casesper
10,000 women-years with placebo.
Ofthe total number of subjects intheestrogen-plus-progestin substudy of the
WHI study, 44 percent (n = 7,320) were 65-74 years of age, while 6.6 percent
(n = 1,095) were 75 years and older. There was a higher relative risk (CE/MPA
versus placebo) of non-fatal stroke andinvasive breast cancer in women 75 and
older compared to women less than 75 years of age. In women greater than 75, the
increased risk of non-fatal stroke and invasive breast cancer observed in the
estrogen-plus-progestin combination group compared to the placebo group was 75
vs. 24 per 10,000 women-years and 52 vs. 12 per 10,000 women-years,
respectively.
In the estrogen-plus-progestin substudy of WHIMS, apopulation of 4,532
postmenopausal women, aged 65 to 79 years, was randomized to CE/MPA (CE
0.625 mg/2.5 mg). In the estrogen-plus-progestin group, after an average follow-
up of 4 years, the relativerisk (CE/MPA versus placebo)of probable dementia
was 2.05 (95% CI 1.21-3.48). The absolute risk of developing probable dementia
with CE/MPA was 45 vs. 22 casesper 10,000 women-years with placebo.
Seventy-nine percent of the cases of probable dementia occurred in women that
were older than 70 for the CE group, and 82 percent of the cases of probable
dementia occurred in women who were older than 70 in the CE/MPA group. The
most common classification of probabledementia in both the treatment groups
and placebo groups was Alzheimer’s disease.
When data fromthe two populations were pooled as planned in the WHIMS
protocol, the reported overall relative risk for probable dementia was 1.76 (95%
CI 1.19-2.60). Since both substudies were conducted in women aged 65 to 79
years, it is unknown whether these findings apply to younger postmenopausal
women. (See BOXED WARNINGSand WARNINGS, Dementia.)
ADVERSEREACTIONS
SeeBOXED WARNINGS, WARNINGSandPRECAUTIONS.
Because clinical trials are conducted under widely varying conditions, adverse reaction
rates observed in the clinicaltrials of a drug cannot be directly compared to rates in the
clinical trials ofanotherdrug and may not reflect the rates observed in practice. The
adverse reaction information fromclinicaltrials does, however, provide a basis for
identifying the adverse events that appear tobe related to drug use and forapproximating
rates.
In a 12-week clinical trial, 209 postmenopausal women with vasomotor symptoms were
treated with ESTROGENUS. Adverse events that occurred in the study at a rate greater
than or equal to 5% and greater than placebo, regardless ofrelationship to study drug, are
summarized in Table 8.
Table 8. ESTROGENUS Tablets – Number (%) of Patients
Reporting Adverse Events* with 5%Occurrence Rate by Body System
0.3 mg 0.625 mg
Body System/Adverse Events* n=68 n=72 1.25 mg
n=69 Placebo
n=72
Number of Patients in Safety Sample(%) 68 (100) 72 (100)69 (100)72 (100)
Number of Patients with Adverse Events
(%) 49 (72) 55 (76) 56 (81) 51 (71)
Number of Patients without Adverse Events
(%) 19 (28) 17 (24) 13 (19) 21 (29)
Body as a Whole
Abdominal Pain 3 (4) 11 (15) 3 (4) 7 (10)
AccidentalInjury 6 (8) 2 (3) 3 (4) 5 (7)
Flu Syndrome 4 (6) 3 (4) 5 (7) 3 (4)
Headache 10 (15) 18 (25) 11 (16) 15 (21)
Pain 10 (15) 14 (19) 7 (10) 6 (8)
Digestive System
Flatulence 3 (4) 5 (7) 3 (4) 2 (3)
Nausea 5 (7) 7 (10) 8 (12) 6 (8)
Nervous System
Dizziness 5 (7) 3 (4) 1 (1) 3 (4)
Paresthesia 0 4 (6) 1 (1) 0
Respiratory System
Bronchitis 0 3 (4) 5 (7) 3 (4)
Rhinitis 3 (4) 4 (6) 5 (7) 4 (6)
Sinusitis 2 (3) 3 (4) 5 (7) 2 (3)
Urogenital System
Breast Pain 0 9 (12) 10 (14) 3 (4)
Dysmenorrhea 1 (2) 6 (8) 1 (1) 2 (3)
*Treatment-emergentadverse events,regardlessofrelationship tostudydrug
In a second 12-week clinical trial, 310 women with symptoms of vulvar and vaginal
atrophy were treated (154 women withESTROGENUS 0.3 mg tablets and 156 women
with placebo). The only adverse event thatoccurred at a rate of >5% was headache;
seven patients (4.55%) with ESTROGENUS and twelve patients (7.69%) with placebo. Vaginitis 1 (2) 5 (7) 2 (3) 3 (4)
The following additional adverse reactions have been reported with estrogen and/or
progestin therapy:
1.Genitourinary system
Changes in vaginal bleeding pattern andabnormal withdrawal bleeding or flow;
breakthrough bleeding; spotting;dysmenorrhea; increase in size ofuterine
leiomyomata; vaginitis, including vaginalcandidiasis; change in amount of cervical
secretion; changes in cervical ectropion;ovarian cancer; endometrial hyperplasia;
endometrial cancer.
2.Breasts
Tenderness, enlargement, pain, nipple discharge, galactorrhea; fibrocystic breast
changes; breast cancer.
3.Cardiovascular
Deep and superficial venousthrombosis; pulmonary embolism;thrombophlebitis;
myocardial infarction; stroke; increase in blood pressure.
4.Gastrointestinal
Nausea, vomiting; abdominal cramps, bloating; cholestatic jaundice; increased
incidence of gallbladder disease; pancreatitis, enlargement of hepatic hemangiomas.
5.Skin
Chloasma or melasma that may persistwhen drug is discontinued; erythema
multiforme; erythemanodosum; hemorrhagic eruption;lossof scalp hair; hirsutism;
pruritus, rash.
6.Eyes
Retinal vascular thrombosis, intolerance to contact lenses.
7.Central Nervous System
Headache; migraine; dizziness; mental depression; chorea; nervousness; mood
disturbances; irritability; exacerbationof epilepsy,dementia.
8.Miscellaneous
Increase or decrease in weight; reducedcarbohydrate tolerance; aggravation of
porphyria; edema; arthralgias; leg cramps;changes in libido; urticaria, angioedema,
anaphylactoid/anaphylactic reactions;hypocalcemia; exacerbation of asthma;
increased triglycerides.
OVERDOSAGE
Serious ill effects have not been reportedfollowing acute ingestion of large doses of
estrogen-containing products by young children. Overdosage of estrogen may cause
nausea and vomiting, and withdrawalbleeding may occur in females.
DOSAGE AND ADMINISTRATION
When estrogen is prescribed for a postmenopausal woman with a uterus, a progestin
should also be initiated toreduce the risk of endometrial cancer. A woman without a
uterus does not need progestin. Use ofestrogen, alone or in combination with a
progestin, should be with the lowest effective dose and for the shortest duration
consistent with treatment goals and risks for the individual woman. Patients should be re-
evaluated periodically as clinically appropriate (e.g., 3-month to 6-month intervals) to
determine iftreatment is still necessary (seeBOXED WARNINGS and WARNINGS).
For women who have a uterus, adequate diagnostic measures, such as endometrial
sampling, when indicated, should be undertaken to rule out malignancy in cases of
undiagnosed persistent or recurring abnormal vaginal bleeding.
ESTROGENUS tablets are takenorally, once daily for:
1.The treatment ofmoderate to severe vasomotor symptoms, associated with
menopause.
ESTROGENUS 0.3 mg
ESTROGENUS 0.45 mg
ESTROGENUS 0.625 mg
ESTROGENUS 0.9 mg
ESTROGENUS 1.25 mg
2.The treatment ofmoderate to severe vaginal dryness and pain with intercourse,
symptomsof vulvar and vaginal atrophy,associated with menopause. When
prescribingsolelyfor the treatment ofmoderate to severe vaginal dryness and pain
during intercourse, topical vaginal products should be considered.
ESTROGENUS 0.3 mg
Patients should be started at the lowestapproved dose of 0.3 mg ESTROGENUS daily.
Subsequent dosage adjustment (which will differ dependingon the indication) may be
made based upon the individual patient response. This dose should be periodically
reassessed by the healthcare provider.
HOW SUPPLIED
ESTROGENUS
(synthetic conjugated estrogens, B) Tablets
0.3 mg:
The tablets are oval, white, film-coated, and debossed with “E” on one side and “1”
on the reverse and are available in bottles of: 100 Tablets
0.45 mg:
The tablets are oval, mauve, film-coated, and debossed with “E” on one side and “2”
on the reverse and are available in bottles of: 100 Tablets
0.625 mg:
The tablets are oval, pink, film-coated, and debossed with “E” on one side and “3”
on the reverse and are available in bottles of: 100 Tablets
0.9 mg:
The tablets are oval, light blue-green, film-coated, and debossed with “E” on one side
and “5” on the reverse and are available in bottles of: 100 Tablets
1.25 mg:
The tablets are oval, yellow, film-coated, and debossed with “E” on one side and “4”
on the reverse and are available in bottles of: 100 Tablets
STORAGE
Store in a dry place below 25°Cin the original package.
Keep this and all drugs out of the reach of children.
Dispense in a tightcontainer with a child-resistantclosure.
REGISTRATION NUMBERS
Estrogenus 0.3 mg: 147 96 33333 00.
Estrogenus 0.45 mg: 147 97 33341 00.
Estrogenus 0.625 mg: 147 98 33340 00.
Estrogenus 0.9 mg: 147 99 33338 00.
Estrogenus 1.25 mg: 148 01 33339 00.
MANUFACTURER
Teva Women’s Health, Inc.
425 Privet Rd.,
Horsham, PA 19044,
USA.
LICENCE HOLDER
Salomon Levin & Elstein Ltd.,
P.O.Box 3696, Petach Tikva, 49133.