Secretagogue-One, Orange - Mfg Part No. 666222030005 Dietary Supplement. Human Growth Factors and IGF-1 Precursors. Improves physical performance; Speeds recovery; Enhances cardiac output. Developed by leading research scientists and biochemist, Secretagogue-One addresses issues of vital importance for health, wellness and physical performance. Secretagogue-One is a proprietary blend of amino acids and precursor nutrients which enhance the body's natural production of Human Growth Factors and Insulin-like Growth Factor-1 (IGF-1). Increased Human Growth Factors and IGF-1 levels have been shown to improve physical performance, speed recover from training, increase cardiac output, and increase immune function. Individual results may vary. Vincent C. Giampapa-Founder, Longevity Institute International, Hormonal Replacement Specialist: As a specialist in Hormone Replacement Therapy (HRT) and Anti-Aging Medicine, I understand the importance of hormone regulation. MHP has taken the latest breakthroughs in scientific research for the development of Secretagogue-One. This nutraceutical formula is designed to naturally optimize the body's production of key precursor hormones, for maximum performance and well being.