NATURAL TESTOSTERONE BOOSTER. Made with various herbs, such as fenugreek, maca, and black pepper extract, MUTANT TEST is a natural testosterone booster to get you healthy and fast results! MUTANT TEST is made with a unique formula featuring targeted ingredients that help raise testosterone levels, fast – making it the quickest way to support your muscle gains.This proprietary, patent-pending, bioactive compound in MUTANT TEST works to raise and protect your testosterone levels, which can lead to improved muscle size and strength while on a proper diet and training plan.