Just something for everyone to know: Propolene has glucomannan, which expands in the stomach and helps you feel full, if you have a problem overeating, its ok to take AS LONG as your dieting and exercising, pointless otherwise. Zantrax is aweful!!! One serving contains as much caffeine as 30 CANS OF POP!!! I have heard so much aweful stuff about the Zantrax that there is no way anyone should ever even consider taking it...