Phentermine
"I am only on my 4th day and am already down 7 lbs! Female, 34 yo, start weight 205. Current weight 198! I am 5'6". No major energy increase noticed. Some excessive sweating, Really great  moods! Less sleep requirements, need about 5-6 hours now when I used to sleep a minimum of 10. So far so good! Will update in two weeks!"