I have been taking Zantrex-3 and i have lost total of 12 lbs. I like it alot. Gives me engry with out giving me the shakes. I do just the bottle says. I drink water like i am suppost too. The only side effect that i do not like is , if i don\'t eat with in 30 - 30 minutes after taking it, i get stomach cramps. Other than that i love it and i have gotten to where i only take in maybe once a day now !