Anyone taken these before? They are kinda the new craze with women around where I live. I can't say they don't necessarily work as I know several women that have lost 20+ pounds in just a few months.

Vitamin B6......8mg
Chromium (polynicotinate).....240mcg

Prop. Blend....cocoa powder, spirulina, green tea extract 95% polyphenols 40% egcg, 1,3 dimethylpenatlamine hci, trace mineral complex, Phenylathylamine hci

Caffeine....180mg
Vanadium chelate.....20mcg

Curious as to the long term safety as, of course, my old lady now wants to start taking them since she knows several people that have lost weight on them.