Although not technically an amino acid, its classed as a conditionally essential amino acid and as a result is often referred to as an amino acid
Therapeutic efficacy of pentoxifylline on proteinuria and renal progression: an update
Goodarzi, Mark O., et al
pp 110 Valceschini E (2006b) Poultry meat trends and consumer attitudes Wang Q, McPherron AC (2012) Myostatin inhibition induces muscle fibre hypertrophy prior to satellite cell activation The Journal of physiology 590:2151-2165 Wen C, Chen X, Chen G, Wu P, Chen Y, Zhou Y, Wang T (2014) Methionine improves breast muscle growth and alters myogenic gene expression in broilers Journal of animal science 92:1068-1073 Wen C, Jiang X, Ding L, Wang T, Zhou Y (2017) Effects of dietary methionine on breast muscle growth, myogenic gene expression and IGF-I signaling in fast-and slow-growing broilers Scientific reports 7:17 Xu Z, Wang M, Mao H, Zhan X, Hu C (2003) Effects of L-carnitine on growth performance, carcass composition, and metabolism of lipids in male broilers Poultry Science 82:408413 Young GA, Keogh JB, Parsons FM (1975) Plasma amino acids and protein levels in chronic renal failure and changes caused by oral supplements of essential amino acids Clinica chimica acta
The difference between a PR and a DNF often happens in your head, not your muscles
