What It Does: Stamina squared is packaged in a proprietary liquid soft-gel offering up to a 98% absorption rate, bypassing the digestive process and going directly into the bloodstream within minutes, as opposed to pill forms that can have as little as 10-20% absorption rates due to fillers and coating that inhibit absorption. It was designed with a proprietary formula that includes twenty percent yohimbe extract; making it the strongest herbal yohimbe based product on the market today. Also it is twice as strong as the closest competitor having only ten percent yohimbe in their herbal blends. Stamina Squared is all natural, contains no synthetics, and is ephedrine and caffeine free!