"June 6, 2011 -- Women over age 60 can safely take an estrogen-lowering drug to reduce their risk of getting breast cancer, a new study shows.
The drug, Aromasin, blocks the production of estrogen that's made outside of the ovaries. It"...
Clinical trials have been conducted with exemestane given as a single dose to healthy female volunteers at doses as high as 800 mg and daily for 12 weeks to postmenopausal women with advanced breast cancer at doses as high as 600 mg. These dosages were well tolerated. There is no specific antidote to overdosage and treatment must be symptomatic. General supportive care, including frequent monitoring of vital signs and close observation of the patient, is indicated.
A male child (age unknown) accidentally ingested a 25-mg tablet of exemestane. The initial physical examination was normal, but blood tests performed 1 hour after ingestion indicated leucocytosis (WBC 25000/mm³ with 90% neutrophils). Blood tests were repeated 4 days after the incident and were normal. No treatment was given.
In mice, mortality was observed after a single oral dose of exemestane of 3200 mg/kg, the lowest dose tested (about 640 times the recommended human dose on a mg/m² basis). In rats and dogs, mortality was observed after single oral doses of exemestane of 5000 mg/kg (about 2000 times the recommended human dose on a mg/m² basis) and of 3000 mg/kg (about 4000 times the recommended human dose on a mg/m² basis), respectively.
Convulsions were observed after single doses of exemestane of 400 mg/kg and 3000 mg/kg in mice and dogs (approximately 80 and 4000 times the recommended human dose on a mg/m² basis), respectively.
AROMASIN Tablets are contraindicated in patients with a known hypersensitivity to the drug or to any of the excipients.
AROMASIN may cause fetal harm when administered to a pregnant woman. Based on its mechanism of action AROMASIN is expected to result in adverse reproductive effects. In non-clinical studies in rats and rabbits, exemestane was embryotoxic, fetotoxic, and abortifacient.
AROMASIN is contraindicated in women who are or may become pregnant. If this drug is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus.
AROMASIN Tablets should not be administered to premenopausal women [see Use in Specific Populations].
Last reviewed on RxList: 5/23/2014
This monograph has been modified to include the generic and brand name in many instances.
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