A prescription or over-the-counter (OTC) medicine that has the same active ingredient as a brand-name version that’s on the market. Generic drugs often are a lower-cost option to their brand-name versions. They can be identical to the brand-name drug or a:\r\r\r generic equivalent: it’s similar to the brand-name drug and has the same active ingredient, but has different inactive ingredients.\r generic alternative: it has a different active ingredient from the brand-name drug, but a similar clinical effect on the body.\r\r\rYou can find out more about generic drugs from the US Food and Drug Administration.