Before NorAndrostenedione and other Andro were banned, Iron Curtain Labs produced the most powerful testosterone booster on the market.  It was called X-Treme NorAndroStack.  It was a 900 mg. per dose formula coveted by many of the leading strength athletes in the world.   Once it was banned, our athletes needed a replacement testosterone booster that was at least as strong but still “legal”. Our scientists developed a superior formula with “Perform”. Perform works so well that it is used as a both a powerful strength supplement by world class athletes and an excellent male performance formula.