B12 (Methylcobalamin)

Methylcobalamin is the bioactive, methylated form of vitamin B12. Unlike cyanocobalamin (synthetic, requires hepatic conversion), methylcobalamin is immediately usable by the body. Essential cofactor for DNA synthesis, red blood cell formation, myelin sheath maintenance, homocysteine metabolism, and mitochondrial function. Injectable form bypasses gastrointestinal absorption barriers. Research compound for energy and cognitive support.