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Prescribing Information
AROMASIN® (exemestane tablets)
Warnings
Return to the AROMASIN Product Center

AROMASIN Tablets may cause fetal harm when administered to a pregnant woman. Radioactivity related to 14C-exemestane crossed the placenta of rats following oral administration of 1 mg/kg exemestane. The concentration of exemestane and its metabolites was approximately equivalent in maternal and fetal blood. When rats were administered exemestane from 14 days prior to mating until either days 15 or 20 of gestation, and resuming for the 21 days of lactation, an increase in placental weight was seen at 4 mg/kg/day (approximately 1.5 times the recommended human daily dose on a mg/m2 basis). Prolonged gestation and abnormal or difficult labor was observed at doses equal to or greater than 20 mg/kg/day. Increased resorption, reduced number of live fetuses, decreased fetal weight, and retarded ossification were also observed at these doses. No malformations were noted when exemestane was administered to pregnant rats during the organogenesis period at doses up to 810 mg/kg/day (approximately 320 times the recommended human dose on a mg/m2 basis). Daily doses of exemestane, given to rabbits during organogenesis caused a decrease in placental weight at 90 mg/kg/day (approximately 70 times the recommended human daily dose on a mg/m2 basis). Abortions, an increase in resorptions, and a reduction in fetal body weight were seen at 270 mg/kg/day. There was no increase in the incidence of malformations in rabbits at doses up to 270 mg/kg/day (approximately 210 times the recommended human dose on a mg/m2 basis).

There are no studies in pregnant women using AROMASIN. AROMASIN is indicated for postmenopausal women. If there is exposure to AROMASIN during pregnancy, the patient should be apprised of the potential hazard to the fetus and potential risk for loss of the pregnancy.


AROMASIN Indication and Important Safety Information
 

Please scroll to see the Indication below.

Important Safety Information

AROMASIN should not be used in women who are premenopausal, are nursing or pregnant, have a known hypersensitivity to the drug, or are taking estrogen-containing agents.

Dose modification is recommended for patients who are receiving certain medications, including strong CYP 3A4 inducers such as rifampicin and phenytoin.

In patients with early breast cancer, elevations in bilirubin, alkaline phosphatase, and creatinine were more common in those receiving AROMASIN than either tamoxifen or placebo.

Reductions in bone mineral density over time are seen with use of AROMASIN.

In IES, incidence of adverse events (AEs; %) occurring in = 10% of patients in any treatment group (AROMASIN vs tamoxifen) were hot flashes (21.2 vs 19.9), fatigue (16.1 vs 14.7), arthralgia (14.6 vs 8.6), headache (13.1 vs 10.8), insomnia (12.4 vs 8.9), and increased sweating (11.8 vs 10.4). Discontinuation rates due to AEs were similar between AROMASIN and tamoxifen (6.3% vs 5.1%).

In advanced breast cancer, only 3% of patients on AROMASIN discontinued treatment due to adverse events. Most common adverse events were mild to moderate and included hot flushes (13% vs 5%), nausea (9% vs 5%), fatigue (8% vs 10%), increased sweating (4% vs 8%) and increased appetite (3% vs 6%) for AROMASIN and megestrol acetate, respectively.

Indication

AROMASIN is indicated for adjuvant treatment of postmenopausal women with estrogen-receptor positive early breast cancer who have received 2 to 3 years of tamoxifen and are switched to AROMASIN for completion of a total of 5 consecutive years of adjuvant hormonal therapy.

AROMASIN is indicated for the treatment of advanced breast cancer in postmenopausal women whose disease has progressed following tamoxifen therapy.

 

Please see full prescribing information.

AROMASIN® (exemestane tablets)

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