Nitro Strength article now again for I immediately began to scientifically test the properties of all the little-known African plants and herbs which made up the shamans penis tissue expanding ritual now as a scientist I was skeptical I wanted rock-solid proof and rock-solid results to be absolutely sure at work that's why I didn't just give men some samples and ask for a review it would be too easy for the placebo effect to take over indeed instead I designed an experiment 100% bullet proof that would once and for all show beyond the shadow of a doubt how powerful the shamans secret recipe really was the study was double-blind as well