Life Extension One-Per-Day Multivitamin
vs
Metagenics Echinacea Synergy
Supplement Comparison

  • Vitamin C: Life Extension One-Per-Day Multivitamin has 4.7× more
  • Vitamin B3 (Niacin): Life Extension One-Per-Day Multivitamin has 7.1× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 54 nutrients compared
Bar chart: per-serving label amounts and listed forms for Life Extension One-Per-Day Multivitamin vs Metagenics Echinacea Synergy.

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Frequently asked questions

Which active ingredients does Life Extension One-Per-Day Multivitamin have?

  • Vitamin A appears as Beta Carotene
  • Vitamin C appears as Calcium Ascorbate and Niacinamide Ascorbate
  • Vitamin D appears as Cholecalciferol (D3)
  • Vitamin E appears as d-Alpha Tocopheryl Acid Succinate
  • Vitamin E appears as Mixed Tocopherols
  • Vitamin B1 (Thiamin) appears as Thiamin HCl
  • Vitamin B2 (Riboflavin) appears as Riboflavin 5-Phosphate Sodium
  • Vitamin B3 (Niacin) appears as Niacinamide
  • 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) appears as Calcium Pantothenate
  • Iodine appears as Potassium Iodide
  • Magnesium appears as Magnesium Oxide
  • Zinc appears as L-OptiZinc Monomethionine
  • Selenium appears as SelenoExcell
  • Manganese appears as Manganese Citrate
  • Chromium appears as Crominex 3+
  • Molybdenum
  • Boron
  • Lutein
  • Lycopene
  • Inositol
  • Alpha Lipoic Acid
  • Quercetin appears as Bio-Quercetin Phytosome
  • Zeaxanthin
  • Apigenin

Which active ingredients does Metagenics Echinacea Synergy have?

  • Vitamin C
  • Vitamin B3 (Niacin)
  • Ginger Extract appears as Ginger (Zingiber officinale) Rhizome Extract containing gingerols and shogaols
  • Licorice Root (Glycyrrhiza glabra) appears as Licorice (Glycyrrhiza glabra) Root Extract standardized to 25% glycyrrhizic acid
  • Echinacea appears as Echinacea (Echinacea purpurea) Aerial Parts 3:1 Extract standardized to 4% total phenols
  • Perilla (Perilla frutescens) appears as Perilla Seed Extract (Perilla frutescens) containing rosmarinic acid and luteolin

Which categories do Life Extension One-Per-Day Multivitamin and Metagenics Echinacea Synergy belong to?

  • Multivitamin
  • Herbal Extract

What health concerns do Life Extension One-Per-Day Multivitamin and Metagenics Echinacea Synergy address?

  • Antioxidant Support
  • Brain, Focus & Cognitive Function
  • Energy & Metabolism
  • Eye Health
  • General Health
  • Healthy Aging & Longevity
  • Heart & Cardiovascular Health
  • Immune System Support
  • Respiratory Health

Which product has a higher amount of Vitamin C per serving?

  • Life Extension One-Per-Day Multivitamin has the highest total amount of Vitamin C: 470 mg per serving

Which product has a higher amount of Vitamin B3 (Niacin) per serving?

  • Life Extension One-Per-Day Multivitamin has the highest total amount of Vitamin B3 (Niacin): 50 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Life Extension One-Per-Day Multivitamin: 1 tablet
    • Metagenics Echinacea Synergy: 1 tablet
  • Vitamin A
    • This supplement has 1500 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 470 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 2000 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 87 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 75 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 50 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin C
    • This supplement has 100 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin B3 (Niacin)
    • This supplement has 7 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg

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