Drug interaction checker
Add the medicines and supplements you take — including herbal ones — and see the known major interactions between them, explained in plain language.
This checker covers major, well-established interactions between the medicines in our drug guides. A clear result here is not a guarantee of safety — interactions also depend on doses, kidney and liver function, and medicines we don't cover yet. Your pharmacist can check your complete list in seconds; never start or stop a medicine based on this tool alone.