Levels tend to me highest in kidney, liver, thymus, and spleen with slightly lower levels in lung, muscle, brain, and skin
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
Vitamin B12 needs to be in the form methylcobalamin, folic acid needs to be form folinic acid, and pyridoxyl-5-phosphate
With no head-to-head study, comparing the two requires stitching together trials that differ in population, comparator, endpoint, and duration a chain with several weak links
Dosing typically starts at 0.6 mg and titrates up to 3 mg over several weeks
Initially, the fluorescence of reaction product increased proportionally with increase of concentration of MBB in accordance with Beer-Lambert law