Gynaecology

Drug interactions with OCPs

  •  Medication whose action may cause contraceptive failure

    Medications which may increase OCP activity 

     Medications whose clearance may be decreased by OCPs

    Medications whose action may be decreased by OCPs

    • Carbamazepine
    • Griseofulvin
    • Oxcarbazepine
    • Phenobarbitol
    • Phenytoin
    • Primidone
    • Rifampin
    • Ritonavir
    • St. John's Wort
    • Topiramate
    • Acetaminophen
    • Erythormycin
    • Fluoxetine
    • Fluconazole
    • Fluvoxamine
    • Grapefruit juice
    • Nefazadone
    • Vitamin C
    • Amitriptyline
    • Caffeine
    • Cyclosporine
    • Diazepam
    • Imipramine
    • Phenytoin
    • Selegiline
    • Theophylline
    • Lamotrigine

    SOGC Clinical Practice Guidelines, Canadian Contraception Consensus, No. 143, Part 2 of 3, March 2004