Oh man, I'm going to be in trouble for posting this well-kept secret again... But I like you, so here it goes:
Head over to the GNC off Ponce De Leon and walk straight to the back. Don't stop at the vitamins or other crap that is only there to distract you. You'll need to talk to Stu. Tell him that Halfwit sent you and that you were sent for the good stuff. Stu will probably look you up and down, but as long as you mention my name he'll just ask for the password.
Gently, lean into his ear and whisper, "unicorn..." and he'll give you the hook up. Sure, the prices might be a little higher, but that's the name of the game my man.
Best of luck and don't tell anyone, okay?