Pure L Serine Powder, 500 Grams (250 Day Supply), Filler Free, Supports Production of L-Cystine & L-Tryptophan for Brain Health, Water Soluble, No GMOs, No Gluten

Serine is a nonessential amino acid that exists in two forms, or isomers: L-serine and D-serine.

L-serine is synthesized from other amino acids, particularly glycine, or other protein metabolites.

Serine also works to the benefit of other brain nutrients in the body as a precursor to the production of L-Tryptophan and L-Cystine.

It can commonly be found in egg, soy, fish, seeds and other high protein options.