Levonorgestrel has 12 known drug interactions based on U.S. FDA drug labeling data. Notable interactions include combinations with Elagolix, Eslicarbazepine Acetate, Fluconazole. Patients taking Levonorgestrel should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.
- Total
- 12
- Moderate
- 10
- Minor
- 2
Moderate (10)
- Levonorgestrel + Elagolix— Elagolix decreases levonorgestrel plasma concentrations. Use effective non-hormonal contraception during treatment and f…
- Levonorgestrel + Eslicarbazepine Acetate— Eslicarbazepine acetate is associated with lower plasma levels of levonorgestrel, potentially decreasing hormonal contra…
- Levonorgestrel + Fluconazole— Fluconazole 200 mg increased levonorgestrel AUC by 25%. Fluconazole 50 mg showed no significant difference.
- Levonorgestrel + Lamotrigine— Oral contraceptive component decreases lamotrigine concentrations approximately 50% and is itself decreased by 19%.
- Levonorgestrel + Lamotrigine Extended-Release— Estrogen-containing oral contraceptives decrease lamotrigine concentrations approximately 50%. Lamotrigine may decrease …
- Levonorgestrel + Leflunomide— Teriflunomide may increase systemic exposure of levonorgestrel. Consideration should be given to type or dose of oral co…
- Levonorgestrel + Leflunomide And Diclofenac Sodium Gel— Teriflunomide may increase systemic exposure of levonorgestrel. Consider contraceptive type or dose adjustment.
- Levonorgestrel + Octreotide— Octreotide may reduce efficacy of combined oral contraceptives; counsel use of alternative non-hormonal or back-up contr…
- Levonorgestrel + Perampanel— FYCOMPA 12 mg daily decreases levonorgestrel exposure by approximately 40%, potentially reducing contraceptive effective…
- Levonorgestrel + Teriflunomide— Teriflunomide may increase systemic exposure of levonorgestrel. Consideration should be given to the type or dose of con…
Minor (2)
- Levonorgestrel + Darifenacin Hydrobromide— Component of combination oral contraceptives. Darifenacin had no effect on pharmacokinetics when combined.
- Levonorgestrel + Trifarotene— Topical application of trifarotene is not expected to affect circulating concentrations of oral hormonal contraceptives …