Carbamazepine and Combined Oral Contraceptive: Drug Interaction Guide

Quick answer: This is a major interaction — avoid combining Carbamazepine and Combined Oral Contraceptive unless specifically directed by your doctor.

Interaction severity: Major — avoid combination

How Carbamazepine interacts with Combined Oral Contraceptive

Carbamazepine is a potent inducer of CYP3A4 and UGT, accelerating ethinylestradiol and progestogen metabolism and reducing contraceptive efficacy.

What you should do

Avoid combined oral contraceptives in women on carbamazepine; recommend copper IUD, levonorgestrel-IUS, or depot medroxyprogesterone acetate instead.

Key facts

Severity

Major — avoid combination

Mechanism

Carbamazepine is a potent inducer of CYP3A4 and UGT, accelerating ethinylestradiol and progestogen metabolism and reduci...

Action

Avoid combined oral contraceptives in women on carbamazepine; recommend copper IUD, levonorgestrel-IUS, or depot medroxy...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Carbamazepine and Combined Oral Contraceptive together?

No — this combination should generally be avoided. Avoid combined oral contraceptives in women on carbamazepine; recommend copper IUD, levonorgestrel-IUS, or depot medroxyprogesterone acetate instead.

What is the severity of this interaction?

The interaction between Carbamazepine and Combined Oral Contraceptive is classified as Major — avoid combination. Carbamazepine is a potent inducer of CYP3A4 and UGT, accelerating ethinylestradiol and progestogen metabolism and reducing contraceptive efficacy.

What should I do if I'm prescribed both?

Avoid combined oral contraceptives in women on carbamazepine; recommend copper IUD, levonorgestrel-IUS, or depot medroxyprogesterone acetate instead. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.