21st Century Magnesium
vs
Jarrow Magnesium Taurate
Supplement Comparison

  • Magnesium: Jarrow Magnesium Taurate has 20% more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 6 nutrients compared
Bar chart: per-serving label amounts and listed forms for 21st Century Magnesium vs Jarrow Magnesium Taurate.

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Frequently asked questions

Which active ingredients does 21st Century Magnesium have?

  • Calcium appears as Calcium Carbonate
  • Magnesium appears as Magnesium Oxide

Which active ingredients does Jarrow Magnesium Taurate have?

  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl
  • Magnesium appears as Magnesium Taurate

Which categories do 21st Century Magnesium and Jarrow Magnesium Taurate belong to?

  • Mineral Complex
  • Single Mineral

What health concerns do 21st Century Magnesium and Jarrow Magnesium Taurate address?

  • Muscle Support
  • General Health
  • Joint & Bone Health
  • Sleep Quality
  • Stress Management
  • Energy & Metabolism
  • Heart & Cardiovascular Health

Which product has a higher amount of Magnesium per serving?

  • Jarrow Magnesium Taurate has the highest total amount of Magnesium: 300 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • 21st Century Magnesium: 1 tablet
    • Jarrow Magnesium Taurate: 3 capsules
  • Calcium
    • This supplement has 65 mg
    • Recommended Dietary Allowance in men: 1000 mg
    • Recommended Dietary Allowance in women: 1000 mg
    • Tolerable Upper Intake Level: 2500 mg
  • Vitamin B6 (Pyridoxine)
    • This supplement has 20 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.3 mg
    • Tolerable Upper Intake Level: 100 mg

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