Our expert says:
DG, No difference whatsoever. Not only is it an absolutel requirement of the law that all generics are chemically identical to the original drug, but in the particular case you mention, but Prozac and Lilly-Fluoxetine are fluoextine made by Lilly, and I really don't believe they have two separate factories using two different sets of ingredients to make the same chemical, required by law to be indentical ! It was just a smart tactic by Lilly, when they lost the exclusive rights to sell fluoxetine, to sell some of it under the different name of Lilly Fluoxetine, while still keeping up sales of the more expensive brand Prozac, at the same time.
Now, 20 mg is a dose that suits most people, most of the time. But if one's response is partial and not as full as one would want, 40 mg is a perfectly reasonable higher dose to try.
So whatever is making you feel so drowsy, I don't see it likely to be due to taking the same drug out of a different box and saving money. Maybe it's taking you a little while to adjust to the higher dose ?
Sorry to hear about your mom, and hope she'll soon be feling better --- even with the aid of generic antibiotics !
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