How it Works? All natural ingredients put your body in a thermogenic state that increases your metabolism and sheds fat. What Separates Lean Genes from the Competition? Besides the fact that we use 100% natural ingredients and all our labs and facilities are Good Manufacturing Process (GMP) Certified, our product does not give you the common "shakes" and "jitters" that you see with other fat burners. Ingredient Breakdown: Citrus Aurantium (Bitter Orange): Increases metabolic rate, thermogenisis, and decreased appetite. Garcinia Cambogia: Suppressing appetite, increasing energy levels, and increasing metabolism. GABA (Gamma-Aminobutyric Acid): Improved mood, lean muscle growth, burning fat. Caffeine Anhydrous: Increase nergy levels and alertness. Vitamin B-6: Maintain a healthy nervous system. Vitamin B-12: Boosted energy levels. Acetyl L-Carnitine: Transports fat into blood cells to be used for energy. Hordenine HCL: Increase energy levels, alertness, and boost metabolism. Acetyl L-Tyrosine: Focus and mood support. Vinpocetine: Blood flow to the brain. Theobromine: Positive mood and alertness. Mucuna Pruriens Extract (98% L-Dopa): Increase dopamine levels. GLUTEN FREE, ALL NATURAL, NON-GMO, THIRD PARTY TESTED, GMP Certified, Made in the USA. No Fillers or Preservatives.