Life Extension Whole Food Multivitamin
vs
Swanson Vitamin B12 Methylcobalamin
Supplement Comparison

  • Vitamin B12 (Cobalamin): Swanson Vitamin B12 Methylcobalamin has 833× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 29 nutrients compared
Bar chart: per-serving label amounts and listed forms for Life Extension Whole Food Multivitamin vs Swanson Vitamin B12 Methylcobalamin.

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Frequently asked questions

Which active ingredients does Life Extension Whole Food Multivitamin have?

  • Vitamin A appears as Mixed Carotenoids
  • Vitamin C
  • Vitamin D appears as Cholecalciferol (D3)
  • Vitamin E appears as d-Alpha Tocopherol
  • Vitamin B1 (Thiamin)
  • Vitamin B2 (Riboflavin) appears as Riboflavin 5-Phosphate Sodium
  • Vitamin B3 (Niacin)
  • Vitamin B6 (Pyridoxine) appears as Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as L-5-Methyltetrahydrofolate
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin
  • Vitamin B7 (Biotin)
  • Vitamin B5 (Pantothenic Acid)
  • Iodine appears as Potassium Iodide
  • Magnesium appears as Magnesium Oxide
  • Zinc appears as Zinc Citrate
  • Selenium
  • Manganese appears as Manganese Citrate
  • Chromium
  • Molybdenum

Which active ingredients does Swanson Vitamin B12 Methylcobalamin have?

  • Vitamin B12 (Cobalamin) appears as Methylcobalamin

Which categories do Life Extension Whole Food Multivitamin and Swanson Vitamin B12 Methylcobalamin belong to?

  • Multivitamin
  • Single Vitamin

What health concerns do Life Extension Whole Food Multivitamin and Swanson Vitamin B12 Methylcobalamin address?

  • Antioxidant Support
  • Energy & Metabolism
  • General Health
  • Healthy Aging & Longevity
  • Immune System Support

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

  • Swanson Vitamin B12 Methylcobalamin 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:
    • Life Extension Whole Food Multivitamin: 3 capsules
    • Swanson Vitamin B12 Methylcobalamin: 1 tablet
  • Vitamin A
    • This supplement has 900 mcg RAE
    • Recommended Dietary Allowance in men: 900 mcg RAE
    • Recommended Dietary Allowance in women: 700 mcg RAE
    • Tolerable Upper Intake Level: 3000 mcg RAE
  • Vitamin C
    • This supplement has 90 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin D
    • This supplement has 1000 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Vitamin E
    • This supplement has 15 mg
    • Recommended Dietary Allowance in men: 15 mg
    • Recommended Dietary Allowance in women: 15 mg
    • Tolerable Upper Intake Level: 1000 mg
  • Vitamin B1 (Thiamin)
    • This supplement has 1.2 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 3.25 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • 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 30, 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