The main ingredients in Hunter Pharma Black Owl pre-workout and fat burner supplement are: Beta-O (Beta Alanine & Orotic Acid): Synergistically work to increase endurance by increasing ATP production, muscle glycogen and carnosine stores Glycerpump: A pump inducer that accumulates in tissues, encouraging water retention for improved endurance, performance and pumps Creatine HCL: Increases absorption of creatine, enhancing phosphocreatine levels for benefits like strength, growth, endurance Choline Bitartrate: Enhances acetylcholine synthesis, improving focus, motivation and reducing fatigue. Maintains liver function and lipid metabolism L-Tyrosine: Positively affects neurotransmitters to support mood and deal with exercise stress Theobromine: Maintains blood pressure, increases blood flow, provides natural stimulation and supports brain function Natural caffeine from green tea: Stimulates the central nervous system, supporting focus, energy, reaction times and overall performance