Compounds

Vitamin D3 (cholecalciferol) regulates calcium absorption, immune function, and mood, with deficiency affecting a majority of the global population. Learn RDA, testing, and safe...

Vitamin B6 (P-5-P) is essential for neurotransmitter synthesis, red blood cell formation, and hormone regulation, with the active P-5-P form offering superior bioavailability. Learn...

Vitamin B5 (pantothenic acid) is a coenzyme A precursor essential for energy metabolism and hormone synthesis. Learn deficiency signs, RDA guidance, and safe dosing.

Vitamin B2 (riboflavin) is essential for energy metabolism, cellular antioxidant defense, and healthy skin and eyes. Learn deficiency signs, RDA guidance, and safe dosing.

Vitamin B12 (methylcobalamin) is essential for red blood cell formation, nerve function, and DNA synthesis, with absorption declining with age. Learn deficiency signs and...

Vitamin B1 (thiamine) is essential for converting carbohydrates into cellular energy and supporting healthy nerve function. Learn deficiency signs, RDA guidance, and safe dosing.

Vitamin K2 (MK-7) directs calcium into bones and teeth while helping keep it out of artery walls, with MK-7 offering a 72-hour half-life for...

Vitamin E (tocopherol) is a fat-soluble antioxidant protecting cell membranes, with natural d-alpha-tocopherol offering meaningfully better bioavailability than synthetic forms. Learn dosing.

Vitamin A (retinol) supports vision, immune function, skin health, and cell growth, with well-defined RDA and upper limit guidance. Learn about forms, deficiency risks,...

Niacinamide (vitamin B3) boosts NAD+, the fuel cells need for energy and DNA repair, without the flushing caused by regular niacin. Learn the evidence,...

Biotin (vitamin B7) is essential for healthy hair, skin, and nails, and for converting food into usable energy. Learn deficiency signs, optimal dosing, and...

Nicotinamide riboside (NR) is a direct NAD+ precursor shown to raise blood NAD+ levels by 40-90% in trials, supporting cellular energy and healthy aging....

Folate (as L-5-MTHF) is the active, ready-to-use form of vitamin B9, essential for DNA repair, mood, and healthy pregnancy outcomes. Learn about MTHFR considerations,...