Douglas Labs B-Complex

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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.


  • B-Complex w/Metafolin® and Intrinsic Factor
  • Supplement Facts
  • Amount Per Serving
  • Serving Size 1 Vegetarian Capsule
  • Servings Per Container 60

each vegetarian capsule contains:

  • Thiamine (Vitamin B1, as Thiamine HCI) 50 mg
  • Riboflavin (Vitamin B2, Riboflavin-5-Phosphate 20 mg
  • Niacinamide (Vitamin B3, as Niacinamide 50 mg
  • Vitamin B6 (as Pyridoxal-5-Phosphate) 20 mg
  • Folate (as L-methylfolate, Metafolin®) 400 mcg
  • Vitamin B12(as methylcobalamin) 500 mcg
  • Biotin 300 mcg
  • Pantothenic Acid (Vitamin B5, as d-calcium pantothenate) 50 mg
  • Intrinsic Factor (from porcine) 20 mg

Other ingredients:

  • Cellulose and vegetable stearate.
  • Metafolin® is a registered trademark of Merck KGaA, Darmstadt, Germany.

Suggested Usage:

  • 1 daily

Douglas Labs B-Complex

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