Beta-ecdysterone
Beta-ecdysterone has been studied extensively in order to determine if it can increase muscle mass. It was found to be effective for both younger and older people. Studies conducted in Russia and the Center for Biotechnology in New Jersey found that beta-ecdysterone increased protein synthesis by 20% and improved insulin function. It may also reduce body fat. In a study conducted by Simpkin, 80 men and women took a daily supplement of beta-ecdysterone for 10 weeks, and they experienced a 6% increase in muscle mass and a 9% reduction in body fat.