I've only tried them 1 or 2 times and they gave me the jitters so i threw them away, long time ago - I don't even recall the brand.
I'm not much on taking any pills , don't even take my vitamins regularly anymore
I haven't tried any of the newer things at all.
If you take any other meds be very careful of interactions.
this site has some good info for women and weight loss-
the hormone/thyroid connection etc.
http://www.womentowomen.com/nutritio...s/default.aspx