Approved Science Energysyl is a caffeine free supplement formulated to help fuel metabolism and reduce fatigue. Boost physical and mental performance while lowering angst and nervousness. Energysyl contains B-Sci, a blend of all 8 essential B Vitamins to facilitate the conversion of food into energy. It can also help cut the amount of time needed for recovery from physical and mental strain. Protect the body from oxidative damage caused by free radicals. This formula includes Vitamins B6 and B9 to help serotonin production and improve mood. Bioperine helps for nutrient absorption and faster results.