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Search any drug to see FDA-rated generics, same-ingredient formulations, and pharmacologic class information — sourced from NLM and FDA data.
Try: lisinopril, metformin, atorvastatin, amlodipine
Four Layers of Drug Equivalency
Generic Substitutes
Same molecule, same strength, same form. FDA Orange Book AB-rated generics that are pharmacy-substitutable.
Different Forms & Strengths
Same active ingredient from RxNorm, but different dose form or strength. Same drug, different packaging.
Same Drug Class
Drugs sharing the same pharmacologic classification (RxClass). For reference only — does not imply clinical interchangeability.
Insurance Coverage
User-reported formulary tier data. See which plans cover which drugs — clearly labeled as unverified community data.
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