Good Morning birdiem,
My understanding is a generic drug contains the same active ingredients in the same dosage form as a brand name drug. The strength and purity of generic medications are strictly regulated.
The FDA requires all generic manufacturers to prove that a generic drug will have the same medical result as its Name-Brand equivalent by measuring the rate and extent of drug absorption. The generic drug should treat your illness or condition with the same success and safety as its brand name equivalent. Generics have to meet the same meticulous requirements as Name-Brand drugs.
Some of the generic drugs are even made by the same company that makes the trade name.
However, I am not a professional and I want you to feel comfortable about what medications you are taking so perhaps you could talk to your physician. Once you have all the info you need you can make an informed consent.