Manufacturer
PFIZER MANUFACTURING BELGIUM NV,
Contents
Medroxyprogesterone acetate
Indication
Contraception, endometriosis, menopausal vasomotor symptoms; hormonally-dependent, recurrent breast cancer in post-menopausal women. Adjunctive &/or palliative treatment of recurrent &/or metastatic endometrial or renal carcinoma
Instruction
Injectable suspensions should be shaken well before use. IM Contraception 150 mg every 3 mth. Endometriosis 50 mg wkly or 100 mg every 2 wk for at least 6 mth. Menopausal vasomotor symptoms 150 mg every 12 wk. Recurrent &/or metastatic endometrial or renal cancer Initially 400-1,000 mg wkly then maintain at 400 mg mthly. Hormonally-dependent, recurrent breast cancer in postmenopausal women Initially 500 mg daily for 28 days then maintain at 500 mg twice wkly.
Drug interaction
Medroxyprogesterone acetate (MPA) is metabolized in-vitro primarily by hydroxylation via the CYP3A4. Specific drug-drug interaction studies evaluating the clinical effects with CYP3A4 inducers or inhibitors on MPA have not been conducted and therefore, the clinical effects of CYP3A4 inducers or inhibitors are unknown.