ECA STACK

Does what it advertises. Only thing is yohimbe is little less. May need to take atleast 4mg per 50pounds. So you could take this with the dosage of yohimbe as per your body weight. I took one and I can feel the thermogenic effect. Also felt some tingling sensation that i usually get from pre-workout. But since I been used to such stuff these no longer affect me. For first time user,please use the recommended dosage and increase when you build tolerance. But caffeine is high so use with caution. You do not want caffeine overdose.