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Oral intake of collagen is digested by gastric enzymes, and the resulting collagen-derived di- and tripeptides are transported through the transmembrane peptide transporter (PEPT-1) into enterocytes, where these peptides are further broken down to amino acids and then released into the bloodstream, yielding about 3960% absorption of the collagen amnio acids depending on how much the collagen was crosslinked 3,4

Early Signs and Symptoms of Vitamin B12 Deficiency: Fatigue, weakness, and lack of energy: These symptoms may be brought on by inadequate vitamin B12, which lowers the synthesis of red blood cells

Trends Cancer 3 , 529541 (2017)

NAD, Nicotinamide Adenine Dinucleotide , is naturally found in every cell in the body