This distinction matters because peptide research literature groups these three under related but non-identical categories
Pure L-Carnitine Powder: This L-carnitine supplement powder provides a consistent source of amino acid support
Or it may look green if it was a B complex vitamin supplement, adds Cleveland Clinic
Ajani JA, D'Amico TA, Bentrem DJ, Chao J, Corvera C, Das P, Denlinger CS, Enzinger PC, Fanta P, Farjah F, Gerdes H, Gibson M, Glasgow RE, Hayman JA, Hochwald S, Hofstetter WL , Ilson DH, Jaroszewski D, Johung KL, Keswani RN, Kleinberg LR, Leong S, Ly QP, Matkowskyj KA, McNamara M, Mulcahy MF, Paluri RK, Park H, Perry KA, Pimiento J, Poultsides GA, Roses R, Strong VE, Wiesner G, Willett CG, Wright CD, McMillian NR, Pluchino LA
Contributions of the brain angiotensin IV-AT4 receptor subtype system to spatial learning. J Neurosci 19(10): 3952-61