It was in Original Vydox Male Enhancement, along with L-Arginine and Yohimbe. While it worked great for some guys (including me), I've read from other customers that the Yohimbe had some bad side effects for other guys as well. There is a strong stimulant in it that can make you feel dizzy and faint, give you a headache, or speed up your heart rate. It can drop your blood pressure to dangerous...