Your body produces carnitine from lysine and methionine, but synthesis can fall short during intense exercise, caloric restriction, aging, or in people who consume minimal red meat and dairy (the primary dietary sources)
The result is more consistent IGF-1 elevation, more pronounced body composition changes at the 3-month mark, and better long-term anti-aging outcomes
Glutathione l mt tripeptide gm cysteine, glycine v glutamic acid
(4) H Wessells 1, D Gralnek, R Dorr, et al (2000) Effect of an alpha-melanocyte stimulating hormone analog on penile erection and sexual desire in men with organic erectile dysfunction Urology, 2000 Oct 1, Volume 56 (Issue 4), Pages 641-6