Perfo-nhance Supplement uses Ashwagandha, safed Museli which have been used by Men for centuries in herbal tradition. By adding Truibulus terrestris, L-Arginine, L-Carnitine and Zinc it helps to bring you the youthful energy you’ve been longing for without the jitters. This natural formula was scientifically formulated with just the right amount of each ingredient to maximize results. Take consistently for best results. Tribulus has long been used in Traditional Chinese Medicine to enhance athletic performance or increase libido. Tribulus is also help to raise your levels of certain hormones, including testosterone and is help to increase testosterone levels. L-Arginine is an essential amino acid that converts into nitric oxide, thereby helping to promote healthy circulation, supports energy levels and lean muscle.