Ingredient directory

The form of vitamin D the body makes from sunlight and the most effective supplemental form for raising blood levels.

Typical: 1,000–2,000 IU

Cyanocobalamin is the synthetic, highly stable form of vitamin B12 used in most supplements and fortified foods.

Typical: 100–1,000 mcg

Folic acid is the fully oxidized, synthetic form of folate used in food fortification and most supplements.

Typical: 400–800 mcg

Methylcobalamin is one of the two coenzyme forms of vitamin B12 that the body uses directly, in this case for the methionine synthase reaction that recycles homocysteine and supports methylation.

Typical: 100–1,000 mcg

Pyridoxine hydrochloride is the standard, inexpensive, and highly stable form of vitamin B6 used in nearly all multivitamins and B-complex products.

Typical: 1.7–50 mg

L-5-methyltetrahydrofolate is the main circulating form of folate and the form cells use directly for homocysteine remethylation, so it bypasses the MTHFR enzyme step that is less active in people carrying the common 677C>T variant.

Typical: 400–1,000 mcg

Chemically identical cholecalciferol extracted from lichen rather than sheep's wool lanolin, which lets a product carry vegan and vegetarian claims while keeping the D3 form that raises and holds serum 25(OH)D better than D2.

Typical: 1,000–2,000 IU

Pyridoxal 5'-phosphate is the active coenzyme form of vitamin B6 and the form measured in blood to assess B6 status.

Typical: 1.7–50 mg

Folinic acid (5-formyltetrahydrofolate) is a reduced, metabolically active folate supplied as its calcium salt.

Typical: 400–800 mcg