Longevity’s new and improved Fast-Gevity contains Sour Orange Extract, which has been shown in studies to function in three ways: to metabolize fat, boost physical performance, and increase lean muscle mass. Fast-Gevity also contains Green Tea Extract, Guarana Extract, Raspberry (Fruit) Extract Powder, Garcinia Cambogia (at 60% Hydroxycitric Acid) and other herbal modulators including Kelp that act as energy promoters, appetite controllers and thermogenic agents. Herbal modulators contain ingredients which studies have shown to be involved in dopamine pathways that help increase energy and metabolism and decrease hunger.