Food Sources of Vitamin B12 meats fish shellfish poultry milk and milk products eggs cereal (fortified) nutritional yeast (fortified) Vitamin B12 is found only in animal protein foods and fortified foods
Methionine, a sulfur-containing, essential amino acid, is a precursor of S-adenosylmethionine, a cofactor for one-carbon metabolism and the final methyl donor for the methylation of DNA, RNA, proteins, and phospholipids.The methionine synthase plays a paramount role in the synthesis of nitrogenous bases (purines and pyrimidines) involved in the formation of DNA
The dosing regimen may depend on the specific patient population, with low-dose, long-term supplementation possibly being sufficient in healthy individuals, whilst patients with end-stage renal disease probably need higher dosages and ideally in combination with folate
It has randomized Phase 3 human data in adults with HIV-associated lipodystrophy, where daily tesamorelin reduced visceral abdominal fat