Yohimbine Extract Plant Source : African Plants Yohimbine's dry bark Main Ingredient : Yohimbine hydrochloride Specification : 8% 98% (HPLC) Molecular formula : C21H26N2O3 HCL Molecular Weight : 390.91 Appearance : 8% is black brown powder, and 98% is white powderThis pharmceutical extratct is from the Yohimbe plant was a front line treatment for male impotence before the advent of Viagra. However, Yohimbine’s actions include increasing blood flow to the penis and increasing the level of the neurotransmitter norepinephrine by up to 68%. (which has been described as the brain’s sex chemical). Furthermore, yohimbine has also been shown to increase the availability of the neurotransmmitter,acetylcholine. All these factors are involved in the frequency, strength and stamina of penile erection, as well as the general desire of awakened libido. Yohimbine has ever been shown to increase the force and the amount of ejaculate,enhancing the male organsm. Not surprising then, yohimbine is clinically effective for over 67% of man who use it. Avoid use if you suffer from blood pressure or heart problems