Swanson Vitamin B12 Cyanocobalamin
vs
Jarrow Methyl B-12 5000 mcg
Supplement Comparison

  • Vitamin B12 (Cobalamin): Jarrow Methyl B-12 5000 mcg has 10× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 2 nutrients compared
Bar chart: per-serving label amounts and listed forms for Swanson Vitamin B12 Cyanocobalamin vs Jarrow Methyl B-12 5000 mcg.

Frequently asked questions

Which active ingredients does Swanson Vitamin B12 Cyanocobalamin have?

  • Vitamin B12 (Cobalamin) appears as Cyanocobalamin

Which active ingredients does Jarrow Methyl B-12 5000 mcg have?

  • Vitamin B12 (Cobalamin) appears as Methylcobalamin

Which categories do Swanson Vitamin B12 Cyanocobalamin and Jarrow Methyl B-12 5000 mcg belong to?

  • Single Vitamin

What health concerns do Swanson Vitamin B12 Cyanocobalamin and Jarrow Methyl B-12 5000 mcg address?

  • Energy & Metabolism
  • Brain, Focus & Cognitive Function
  • General Health
  • Neurological Support

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

  • Jarrow Methyl B-12 5000 mcg has the highest total amount of Vitamin B12 (Cobalamin): 5000 mcg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Swanson Vitamin B12 Cyanocobalamin: 1 capsule
    • Jarrow Methyl B-12 5000 mcg: 1 tablet
  • Vitamin B12 (Cobalamin)
    • This supplement has 500 mcg
    • Recommended Dietary Allowance in men: 2.4 mcg
    • Recommended Dietary Allowance in women: 2.4 mcg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B12 (Cobalamin)
    • This supplement has 5000 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: January 2, 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.
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  • Author: VIOscan Research Team