Swanson Folic Acid & B12
vs
Douglas Laboratories Methyl Folate 1,000 mcg Metafolin
Supplement Comparison

  • Vitamin B9 (Folate): Douglas Laboratories Methyl Folate 1,000 mcg Metafolin has 0.12% more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 4 nutrients compared
Bar chart: per-serving label amounts and listed forms for Swanson Folic Acid & B12 vs Douglas Laboratories Methyl Folate 1,000 mcg Metafolin.

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Frequently asked questions

Which active ingredients does Swanson Folic Acid & B12 have?

  • Vitamin B9 (Folate) appears as Folic Acid
  • Vitamin B12 (Cobalamin) appears as Cyanocobalamin

Which active ingredients does Douglas Laboratories Methyl Folate 1,000 mcg Metafolin have?

  • Vitamin B9 (Folate) appears as Metafolin L-5-MTHF

Which categories do Swanson Folic Acid & B12 and Douglas Laboratories Methyl Folate 1,000 mcg Metafolin belong to?

  • Single Vitamin

What health concerns do Swanson Folic Acid & B12 and Douglas Laboratories Methyl Folate 1,000 mcg Metafolin address?

  • Energy & Metabolism
  • Heart & Cardiovascular Health
  • Pregnancy Support
  • Immune System Support
  • Methylation Support

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

  • Douglas Laboratories Methyl Folate 1,000 mcg Metafolin has the highest total amount of Vitamin B9 (Folate): 1667 mcg DFE per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Swanson Folic Acid & B12: 1 capsule
    • Douglas Laboratories Methyl Folate 1,000 mcg Metafolin: 1 tablet
  • Vitamin B9 (Folate)
    • This supplement has 1665 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
  • Vitamin B9 (Folate)
    • This supplement has 1667 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

Last updated: February 19, 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