Caffine, Ephedrine (it's in congestion medicine like Brokaid in the US) and Yohmbine all have complementary effects on your metabolic rate and the last two have

Caffine, Ephedrine (it's in congestion medicine like Brokaid in the US) and Yohmbine all have complementary effects on your metabolic rate and the last two have been shown to help speed fat loss while minimizing muscle loss.