GNC Yohimbe 451 Go to amazon.com Related posts Which is the best yohimbe supplement? FeatureA favorite among mature men.Each capsule packs 451 mg of pure standardized Yohimbe Bark extract (2% yohimbine alkaloid = 9 mg)For More Information About Whole Herbs Vs. Extracts, Click Here DescriptionYohimbe 451 - 60 Capsules - GNC - Yohimbe