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Site Name (& link)
Sponsor
Comments
Walgreens.com
very easy and intuitive
FDA
a good background on how the FDA uses drug interaction and synergism information
FDA
a pretty intense document that gets into the details of the types of drug interactions
Dal.ca
mainly a list of sites with more specified interactions between similar drugs
Healthline.com
very easy and intuitive
MedScape.com
very easy and intuitive
Drugs.com
very easy and intuitive
RxList.com
IMO, the best of them all. Easy to use, can consider more than just two drugs' interactions, and much more.
Toronto General Hospital
many tables of drug interactions, concentrating on HIV drugs but others, too
FDA
good general treatment, but not as detailed as many others, making specific drug-drug interactions harder to find. the pamphlet is better.
DrugBank.ca
very easy and intuitive
Indiana Univ.
Medical School
focuses completely on drugs metabolized by one of the many Cytochrome P-450 enzymes, which is most of them
FDA
a unique approach, looking proactively at possible interactions instead of dealing with problems after they emerge
WebMD.com
very easy and intuitive