Douglas Laboratories B-Complex is a comprehensive formula including Metafolin®, Methylcobalamin Vitamin B12, and Intrinsic Factor in its formulation.
Metafolin® contains only the S isomer of 5-MTHF and has been shown to be the only form of folate to be able to cross the blood-brain barrier.
Studies indicate that methylcobalamin, a coenzyme form of B12, may be better utilized and better retained in the body.
Intrinsic factor is a protein produced by cells in the stomach lining and is needed for the intestines to absorb vitamin B12 efficiently. A deficiency of intrinsic factor can lead to vitamin B12 deficiency.
| Active ingredients per vegetarian capsules: | |
| Thiamine (Vitamin B1, as thiamine HCL) | 100mg |
| Riboflavin (Vitamin B2, Riboflavin-5-Phosphate) | 12.7mg |
| Niacin (Vitamin B3, as Niacinamide and inositol hexaniacinate) | 108mg |
| Vitamin B6 (as pryidoxine HCl and 40% Pyridoxal-5 Phosphate) | 16.7mg |
| Folate (as L-5-MTHF, Metafolin®) (400mcg L-5-MTHF) | 667mcg |
| Vitamin B12 (as methylcobalamin) | 400mcg |
| Biotin | 400mcg |
| Pantothenic Acid (Vitamin B5, as d-calcium pantothenate) | 100mg |
Other ingredients: hydroxypropyl methylcellulose (capsule), ascorbyl palmitate.
Metoflin® is a registered trademark of Merck KGaA, Damstadt, Germany.
Adults: Take 1 capsule daily with food.
