Phentermine
"Hello! I'm 5'2", 149lbs. And I'm on day 4 of phentermine 15mg. The only side effects I've had are mild dizziness, and hard to sleep before 11pm even tho I take it as early as 7am. My cravings are completely gone! But, i haven't lost any weight! 
The energy feeling comes and goes, ive actually taken a nap once.. I'll try to keep my updates current."