I'd like to offer a big "maybe" on generic drugs. My mom's endocrinologist told her that different thyroid hormone replacement preparations tend to be absorbed differently -> differing bio-availability -> return of symptoms, so she must always check her refill labels to be sure she gets the one she's supposed to be on. I just started a newly available generic equivalent for my antidepressant and I'm not sure it's working as well as the brand name did.