#january2020usmle2k
Which of the following medications reduces the effectiveness of oral contraceptives?
A- Carbamazepine
B- Ketoconazole
C- Omeprazole
D- Ritonavir
Which of the following medications reduces the effectiveness of oral contraceptives?
A- Carbamazepine
B- Ketoconazole
C- Omeprazole
D- Ritonavir