The active ingredient of brand name Plaquenil and generic hydroxychloroquine are the same. In the United States, the manufacture of prescription drugs is highly regulated and the manufacturer is required, by federal law, to guarantee the integrity of their product, for both brand name and generic formulation.
Efficacy of Plaquenil versus a generic Hydroxychloroquine formulation
Has anyone ever questioned or compared the efficacy of Plaquenil versus a generic Hydroxychloroquine formulation? Is there any way to verify that the medications being purchased through my local pharmacy are not counterfit?