Plus, placebo effect, is just as valuable in the psych arena. When it comes to brain drugs, I wouldn't mind remaining on branded for placebo + peace of mind. (no pun intended.)
>It's +/-20% (25% if measured from the lower bound), which is a big difference for a drug like Adderall.<
In terms of clinical effect, not necessarily.
Adderall takes roughly 3-4 days to reach steady state. A generic version might take more or less time to reach steady state, but the eventual therapeutic effect would be the same.