Ampicillin
Adverse Effect: decreased contraceptive effectiveness Clinical Management: During concurrent use of ampicillin and Progesterone another form of birth control should be used.
Conj. Oestrogens
Adverse Effect: Increased estrone and equilin plasma concentrations
Doxorubicin
Increased doxorubicin-induced neutropenia and thrombocytopenia have been observed when intravenous progesterone (up to 10 g over 24 hours) was administered concurrently with intravenous doxorubicin (60 mg/m2 bolus) to patients with advanced malignancies
Ketoconazole
Adverse Effect: An increase in the bioavailability of progesterone |