Ongoing progress in peptide technologies plus drug delivery systems is speeding up how quickly new products move from idea to market
10.1186/s40478-019-0737-z Acta Neuropathol
In humans, the endogenous carnitine pool, which comprises free L-carnitine and a range of short-, medium- and long-chain esters, is maintained by absorption of L-carnitine from dietary sources, biosynthesis within the body and extensive renal tubular reabsorption from glomerular filtrate
First, there is considerable heterogeneity in study designs, including wide variations in the dosage, bioavailability, and treatment duration of supplements (e.g., -3 PUFAs, collagen peptides), which complicates direct comparison and meta-analysis
Jennifer Manne-Goehler, a Harvard metabolic disease specialist