New Zealand - English - Medsafe (Medicines Safety Authority)
New Zealand Datasheet
Name of Medicine
EDETATE DISODIUM INJECTION, USP
is a sterile, non-pyrogenic, concentrated solution of edetate
disodium in water for injection, which, as a result of pH adjustment with sodium hydroxide, contains
varying amounts of disodium and trisodium salts. Each ml contains: Edetate Disodium anhydrous
Hydrochloric Acid. Approximate pH is 7 (range
Edetate disodium is classified as a clinical chelating agent for emergency lowering of serum calcium
dihydrate, a white crystalline powder soluble in water. It is also described as the disodium salt of
ethylenediamine-tetra-acetic acid (EDTA).
Edetate disodium injection forms chelates with the cations of calcium and many divalent and trivalent
metals. Because of its affinity for calcium, edetate disodium will produce a lowering of the serum
calcium level during intravenous infusion. Slow infusion over a protracted period may cause
mobilization of extracirculatory calcium stores. Edetate disodium exerts a negative inotropic effect
upon the heart.
After intravenous administration, the chelate formed is excreted in the urine with 50% appearing in 1
hour and over 95% in 24 hours.
Edetate disodium likewise forms chelates with other polyvalent metals and produces increases in
urinary excretion of magnesium, zinc and other trace elements. It does not form a chelate with
potassium but may reduce the serum level and increase urinary loss of potassium.
hypercalcemia and for the control of ventricular arrhythmias associated with digitalis toxicity.
Dosage and Administration
Edetate Disodium injection is administered by intravenous infusion only after dilution. The solution
contains no bacteriostat, antimicrobial agent or buffer (except for pH adjustment) and is intended
only for use (after dilution) as a single dose infusion. When smaller doses are required, the unused
portion should be discarded.
For Adults: The recommended daily dosage is 50 mg/kg of body weight to a maximum dose of 3 g in
24 hours. The dose, calculated by body weight, should be diluted in 500 ml of 5% Dextrose Injection,
USP or 0.9% Sodium Chloride Injection, USP. The intravenous infusion should be regulated so that
three or more hours are required for completion and the cardiac reserve of the patient is not
exceeded. A suggested regimen includes five consecutive daily doses followed by two days without
medication with repeated courses as necessary to a total of 15 doses.
For Children: The recommended daily dosage is 40 mg/kg (1 g per 25 kg) of body weight. The dose,
calculated by body weight should be diluted in a sufficient volume of 5% Dextrose Injection, or 0.9º/o
Sodium Chloride Injection, USP to bring the final concentration of edetate disodium to not more than
3%. The intravenous infusion should be regulated so that three or more hours are required for
completion and the cardiac reserve of the patient is not exceeded. The maximum dose is 70 mg/kg
per 24 hour period.
Parental drug products should be inspected visually for particulate matter and discoloration prior to
administration, whenever solution and container permit, see Warnings and Precautions.
Edetate Disodium Injection is contraindicated in anuric patients. It is also contraindicated in those
persons who have shown hypersensitivity to any component of this preparation.
Warnings and Precautions
FOR INTRAVENOUS INFUSION ONLY AFTER DILUTION
The use of this medicine in any particular patient is recommended only when the severity of the
clinical condition justifies the aggressive measures associated with this type of therapy.
Rapid intravenous infusion or attainment of high serum concentration of edetate disodium may cause
a precipitous drop in the serum calcium level and may result in fatality. Toxicity appears to be
dependent upon both total dosage and speed of administration. The rate of administration and
dosage should not exceed that indicated in Dosage and Administration.
Because of its irritant effect on the tissues and because of the danger of serious side effects if
administered in the undiluted form, Edetate Disodium injection should be diluted before infusion, see
Dosage and Administration.
After the infusion of Edetate Disodium injection, the patient should remain in bed for a short time
because of the possibility of postural hypotension.
administering the drug to patients with heart disease. Caution is dictated in the use of this drug in
patients with limited cardiac reserve or incipient congestive failure.
Edetate Disodium injection therapy should be used with caution in patients with clinical or subclinical
potassium deficiency states. In such cases it is advisable to perform serum potassium blood levels
for possible hypokalemia and to monitor ECG changes.
The possibility of hypomagnesemia should be kept in mind during prolonged therapy.
Treatment with edetate disodium has been shown to cause a lowering of blood sugar and insulin
requirements in patients with diabetes who are treated with insulin.
Do not use unless solution is clear and container is intact. Discard unused portion.
Laboratory Test: Renal excretory function should be assessed prior to treatment. Periodic BUN and
creatinine determinations and daily urinalysis should be performed on patients receiving this drug.
Because of the possibility of inducing an electrolyte imbalance during treatment with edetate
disodium, appropriate laboratory determinations and studies to evaluate the status of cardiac
function should be performed. Repetition of these tests is recommended as often as clinically
indicated, particularly in patients with ventricular arrhythmia and those with a history of seizure
disorders or intracranial lesions. If clinical evidence suggests any disturbance of liver function during
treatment, appropriate laboratory determinations should be performed and withdrawal of the drug
may be required.
Carcinogenesis, Mutagenesis, Impairment of Fertility
Definitive statements cannot be made due to insufficient data and conflicting information.
Use in Pregnancy
Pregnancy Category C. Animal reproduction studies have not been conducted with edetate disodium
injection. It is also not known whether edetate Disodium injection can cause foetal harm when
administered to a pregnant woman or can affect reproduction capacity. Edetate disodium injection
should be given to a pregnant woman only if clearly needed.
Use in Lactation
The safety of this product in nursing mothers has not been established.
Effects on Ability to Drive and Use Machines
No effect expected.
Gastrointestinal symptoms such as nausea, vomiting and diarrhoea are fairly common following
administration of this drug. Transient symptoms such as circumoral paresthesia, numbness and
headache, and a transient drop in systolic and diastolic blood pressure may occur. Thrombophlebitis,
febrile reactions, hyperuricemia, anaemia, exfoliative dermatitis and other toxic skin and mucous
membrane reactions have been reported.
Nephrotoxicity and damage to the reticuloendothelial system with haemorrhagic tendencies have
been reported with excessive dosages.
Drug/Laboratory Test Interactions: The oxalate method of determining serum calcium tends to give
low readings in the presence of edetate disodium; modification of this method, as by acidifying the
sample or use of a different method may be required for accuracy.
The least interference will be noted immediately before a subsequent dose is administered.
Because of the possibility that edetate disodium injection may produce a precipitous drop in the
serum calcium level, a source of calcium replacement suitable for intravenous administration (such
as calcium gluconate) should be instantly available at the bedside before edetate disodium is
administered. Extreme caution is dictated in the use of intravenous calcium in the treatment of
tetany, especially in digitalized patients because the action of the drug and the replacement of
calcium ions may produce a reversal of the desired digitalis effect.
Store at controlled room temperature 15ºC – 30ºC. Avoid Excessive heat. Protect from freezing.
, 150 mg/ml is available in 100 ml vials or 20 ml ampoules.
Drug Interactions: Additives may be incompatible with the reconstituted (diluted) solution required for
intravenous infusion. Consult with pharmacist, if available. When introducing additives, use aseptic
technique, mix thoroughly and do not store.
Name and Address
Centre for Advanced Medicine Ltd
110 Remuera Rd,
Ph (09) 524-7743
Fax (09) 524-7745
Date of Preparation
3 June 2000