Doctor's Best Fully Active B Complex
vs
Jarrow Methyl B-12 & Methyl Folate
Supplement Comparison

  • Vitamin B12 (Cobalamin): same total amount on both labels
  • Vitamin B9 (Folate): Jarrow Methyl B-12 & Methyl Folate has 70% more
  • Vitamin B6 (Pyridoxine): Doctor's Best Fully Active B Complex has 33× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 17 nutrients compared
Bar chart: per-serving label amounts and listed forms for Doctor's Best Fully Active B Complex vs Jarrow Methyl B-12 & Methyl Folate.

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Frequently asked questions

Which active ingredients does Doctor's Best Fully Active B Complex have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin B1 (Thiamin) appears as Thiamin HCl
  • Vitamin B2 (Riboflavin) appears as Riboflavin and Riboflavin 5-Phosphate
  • Vitamin B3 (Niacin) appears as Niacinamide and Niacin
  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl and Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as Quatrefolic (6S)-5-MTHF Glucosamine Salt
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin
  • Vitamin B7 (Biotin) appears as D-Biotin
  • Vitamin B5 (Pantothenic Acid) appears as D-Calcium Pantothenate

Which active ingredients does Jarrow Methyl B-12 & Methyl Folate have?

  • Vitamin B6 (Pyridoxine) appears as Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as 6S-5-methyltetrahydrofolate glucosamine salt
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin

Which categories do Doctor's Best Fully Active B Complex and Jarrow Methyl B-12 & Methyl Folate belong to?

  • B-Complex Formula

What health concerns do Doctor's Best Fully Active B Complex and Jarrow Methyl B-12 & Methyl Folate address?

  • Cellular Health
  • Energy & Metabolism
  • Methylation Support

Which product has a higher amount of Vitamin B12 (Cobalamin) per serving?

  • Both products list the same total amount of Vitamin B12 (Cobalamin) per serving

Which product has a higher amount of Vitamin B9 (Folate) per serving?

  • Jarrow Methyl B-12 & Methyl Folate has the highest total amount of Vitamin B9 (Folate): 680 mcg DFE per serving

Which product has a higher amount of Vitamin B6 (Pyridoxine) per serving?

  • Doctor's Best Fully Active B Complex has the highest total amount of Vitamin B6 (Pyridoxine): 50 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Doctor's Best Fully Active B Complex: 1 capsule
    • Jarrow Methyl B-12 & Methyl Folate: 1 tablet
  • Vitamin C
    • This supplement has 40 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin B1 (Thiamin)
    • This supplement has 60 mg
    • Recommended Dietary Allowance in men: 1.2 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B2 (Riboflavin)
    • This supplement has 75 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B3 (Niacin)
    • This supplement has 50 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg
  • Vitamin B6 (Pyridoxine)
    • This supplement has 50 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.3 mg
    • Tolerable Upper Intake Level: 100 mg
  • Vitamin B9 (Folate)
    • This supplement has 400 mcg DFE
    • Recommended Dietary Allowance in men: 400 mcg DFE
    • Recommended Dietary Allowance in women: 400 mcg DFE
    • Tolerable Upper Intake Level: 1000 mcg DFE
  • Vitamin B6 (Pyridoxine)
    • This supplement has 1.5 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.3 mg
    • Tolerable Upper Intake Level: 100 mg
  • Vitamin B9 (Folate)
    • This supplement has 680 mcg DFE
    • Recommended Dietary Allowance in men: 400 mcg DFE
    • Recommended Dietary Allowance in women: 400 mcg DFE
    • Tolerable Upper Intake Level: 1000 mcg DFE
  • Vitamin B12 (Cobalamin)
    • This supplement has 1000 mcg
    • Recommended Dietary Allowance in men: 2.4 mcg
    • Recommended Dietary Allowance in women: 2.4 mcg
    • Tolerable Upper Intake Level: Not established

Last updated: February 15, 2026

  • Sources & Methodology: Nutrient data and forms are taken directly from Supplement Facts labels. Reviewed and standardized by the VIOscan Research Team. Learn more on the Methodology page.
  • We show the Recommended Dietary Allowance (RDA) when available. If no RDA exists, we show the Adequate Intake (AI). Tolerable Upper Intake Levels (UL) are used for upper limits. Unless otherwise noted, RDAs shown correspond to healthy adults aged 19–50 years and are sex-specific. Separate values exist for 51–70 years and >70 years, and pregnancy and lactation are excluded. All values come from the Dietary Reference Intakes (DRIs) published by the National Academies of Sciences, Engineering, and Medicine (NASEM), Food and Nutrition Board (FNB).
  • Transparency: We’re funded by our users. We don’t have sponsors or affiliate links, and we don’t sell supplements.
  • Editorial standards: we provide independent, impartial and objective data analysis.
  • This analysis is for educational purposes only. It is not a substitute for medical advice.
  • Questions? Read our Frequently Asked Questions or contact us, we’re here to help.
  • See an error? Report it through our Contact page.
  • Author: VIOscan Research Team