is injectable l carnitine oil based fishy What Are L-Carnitine Injections Used For? Injectable L-Carnitine: What It Is,

Indeed it consists of two transmembrane domains, a large extracellular domain, and two short intracellular domains that are required for CD36 function after substrate binding (Su and Abumrad, 2009)

In Atlantic salmon, dietary L-carnitine supplementation increased the amino acid concentration in plasma and the liver, especially the three branched-chain amino acids, including leucine, isoleucine, and valine, and increased the protein synthesis capacity, accompanied by the accumulation of protein in organs 52

Since ALCAR can be converted to L-carnitine in the body, it may contribute to this process

Roe CR, Mochel F