For any women who is interested in losing some extra fat but can't tolerate ephedra and even caffeine, there's an excellent alternative. In fact, it's much better than any central nervous system stimulant since any CNS will backfire and cause a slower metabolism once usage is stopped. The product is called ZIP! and it works by allowing maximum conversion of T4 thyroid hormone into the active fat burning T3. It is non-suppressive and won't give you the "jitters." I suffer from occasional anxiety and can't tolerate any stimulants including yohimbe and I can use this stuff every day with no problems. Worth checking out: www.proteinfactory.com