Ritonavir and Teriflunomide interaction
Ritonavir and Teriflunomide: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Ritonavir (Norvir) label · effective 2026-07-23
Immunosuppressants: cyclosporine, tacrolimus, sirolimus (rapamycin) ↑ immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents when co-administered with ritonavir.
From the Teriflunomide (Aubagio) label · effective 2026-02-20
Effect of AUBAGIO on CYP1A2 Substrates Teriflunomide may be a weak inducer of CYP1A2 in vivo .
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.