i don't know about hydroxycut but for supplements i take omega 3-6-9, chromium and a multivitamin for women. i used to take L-glutamine for sugar cravings but it's a little outside my current budget....along with L-phenylanaline and co enzyme Q10. those two are really expensive. and the first one is sooo hard to find in canada!
Gotta put my .02 in here. If it is a supplement to reduce appetite I honestly can say that when on Atkins I don't need it. Atkins IS an appetite suppressant for me (except when it is that TOM)