I am guessing that you see two different doctors. One for
weight loss and one for your ADHD/anxiety. I say this because
Basically phentermine is a stimulant (works like adderall), but works differently then adderall. I am not sure you should be taking it with adderall. "Phentermine use is containdicated in those who are:
Taking amphetamine (i.e. Adderall, Dexedrine, Vyvanse), in the last 14 days"
This quote is from - http://en.wikipedia.