MediHelp
Drug interactions A–Z
Known drug-drug interactions with severity, mechanism and clinical management.
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
- ranolazine + rifampin contraindicated
- rifampin + ritonavir-boosted atazanavir contraindicated
- rifampin + rivaroxaban major
- rifampin + ticagrelor major
- rifampin + voriconazole contraindicated
- rifampin + warfarin major
- riociguat + sildenafil contraindicated
- risperidone + sertraline moderate
- ritonavir + sildenafil major
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.