Ethinylestradiol Levonorgestrel and Topiramate: Drug Interaction Guide
Quick answer: This combination requires caution. Ethinylestradiol Levonorgestrel and Topiramate can be used together with adjustments and monitoring.
How Ethinylestradiol Levonorgestrel interacts with Topiramate
At higher doses, topiramate induces CYP3A4 and can reduce ethinylestradiol exposure, potentially decreasing contraceptive effectiveness.
What you should do
Assess the topiramate dose and indication. At doses of 200 mg daily or more, use a contraceptive method unaffected by enzyme induction.
Key facts
Severity
Moderate — caution required
Mechanism
At higher doses, topiramate induces CYP3A4 and can reduce ethinylestradiol exposure, potentially decreasing contraceptiv...
Action
Assess the topiramate dose and indication. At doses of 200 mg daily or more, use a contraceptive method unaffected by en...
Frequently asked questions
Can I take Ethinylestradiol Levonorgestrel and Topiramate together?
With caution. Assess the topiramate dose and indication. At doses of 200 mg daily or more, use a contraceptive method unaffected by enzyme induction.
What is the severity of this interaction?
The interaction between Ethinylestradiol Levonorgestrel and Topiramate is classified as Moderate — caution required. At higher doses, topiramate induces CYP3A4 and can reduce ethinylestradiol exposure, potentially decreasing contraceptive effectiveness.
What should I do if I'm prescribed both?
Assess the topiramate dose and indication. At doses of 200 mg daily or more, use a contraceptive method unaffected by enzyme induction. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.