What is a "generic drug"?

A generic drug is defined as a medication that is chemically identical to a brand-name drug but is marketed under its chemical name or a non-proprietary name rather than a trademark. These drugs are often less expensive than their brand-name counterparts because the manufacturers do not have to invest in the same level of research and marketing that the original brand did. Generic drugs must demonstrate that they are therapeutically equivalent to the brand-name drug, meaning they have the same intended use, dosage form, strength, and administration route, ensuring that they provide the same clinical effect and safety profile.

In contrast, a drug that is no longer produced would not qualify as a generic since it is not available for use. A drug that requires a prescription is not specifically indicative of whether it’s a generic or brand-name, as both types can be prescription medications. Lastly, a brand-name drug with a similar formulation does not fit the definition of a generic drug because generics are specifically those that reference the original brand drug, not different products that might have similar effects or formulations.