21st Century One Daily Men's Health
vs
Douglas Laboratories Basic Minerals
Supplement Comparison

  • Magnesium: Douglas Laboratories Basic Minerals has 67% more
  • Zinc: 21st Century One Daily Men's Health has 10% more
  • Calcium: 21st Century One Daily Men's Health has 5.0% more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 51 nutrients compared
Bar chart: per-serving label amounts and listed forms for 21st Century One Daily Men's Health vs Douglas Laboratories Basic Minerals.

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Frequently asked questions

Which active ingredients does 21st Century One Daily Men's Health have?

  • Vitamin A appears as Retinyl Acetate and Beta-Carotene
  • Vitamin C appears as Ascorbic Acid
  • Vitamin D appears as Cholecalciferol (D3)
  • Vitamin E appears as dl-Alpha Tocopheryl Acetate
  • Vitamin K appears as Vitamin K1 Phytonadione
  • Vitamin B1 (Thiamin) appears as Thiamin Mononitrate
  • Vitamin B2 (Riboflavin) appears as Riboflavin
  • Vitamin B3 (Niacin) appears as Niacinamide
  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl
  • Vitamin B9 (Folate) appears as Folic Acid
  • Vitamin B12 (Cobalamin) appears as Cyanocobalamin
  • Vitamin B7 (Biotin) appears as D-Biotin
  • Vitamin B5 (Pantothenic Acid) appears as D-Calcium Pantothenate
  • Calcium appears as Calcium Carbonate
  • Iodine appears as Potassium Iodide
  • Magnesium appears as Magnesium Oxide
  • Zinc appears as Zinc Oxide
  • Selenium appears as Sodium Selenate
  • Copper appears as Copper Oxide
  • Manganese appears as Manganese Sulfate
  • Chromium appears as Chromium Chloride
  • Lycopene

Which active ingredients does Douglas Laboratories Basic Minerals have?

  • Calcium appears as Calcium Citrate
  • Iodine appears as Kelp
  • Magnesium appears as Magnesium Aspartate and Amino Acid Chelate
  • Zinc appears as L-OptiZinc Monomethionine
  • Selenium appears as Albion Amino Acid Complex
  • Copper appears as Copper Amino Acid Chelate
  • Manganese appears as Manganese Amino Acid Chelate
  • Chromium appears as Chromium Polynicotinate
  • Molybdenum appears as Molybdenum A.A. chelate
  • Potassium appears as Potassium Chloride
  • Boron appears as Boron Aspartate and Citrate
  • Vanadium appears as Vanadyl Sulfate

Which categories do 21st Century One Daily Men's Health and Douglas Laboratories Basic Minerals belong to?

  • Multivitamin
  • Mineral Complex

What health concerns do 21st Century One Daily Men's Health and Douglas Laboratories Basic Minerals address?

  • Antioxidant Support
  • Energy & Metabolism
  • General Health
  • Men's Health
  • Joint & Bone Health

Which product has a higher amount of Magnesium per serving?

  • Douglas Laboratories Basic Minerals has the highest total amount of Magnesium: 200 mg per serving

Which product has a higher amount of Zinc per serving?

  • 21st Century One Daily Men's Health has the highest total amount of Zinc: 11 mg per serving

Which product has a higher amount of Calcium per serving?

  • 21st Century One Daily Men's Health has the highest total amount of Calcium: 210 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • 21st Century One Daily Men's Health: 1 tablet
    • Douglas Laboratories Basic Minerals: 3 capsules
  • 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 99 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 K
    • This supplement has 30 mcg
    • Adequate Intake in men: 120 mcg
    • Adequate Intake in women: 90 mcg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B1 (Thiamin)
    • This supplement has 1.32 mg
    • Recommended Dietary Allowance in men: 1.2 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Calcium
    • This supplement has 200 mg
    • Recommended Dietary Allowance in men: 1000 mg
    • Recommended Dietary Allowance in women: 1000 mg
    • Tolerable Upper Intake Level: 2500 mg
  • Iodine
    • This supplement has 75 mcg
    • Recommended Dietary Allowance in men: 150 mcg
    • Recommended Dietary Allowance in women: 150 mcg
    • Tolerable Upper Intake Level: 1100 mcg
  • Zinc
    • This supplement has 10 mg
    • Recommended Dietary Allowance in men: 11 mg
    • Recommended Dietary Allowance in women: 8 mg
    • Tolerable Upper Intake Level: 40 mg
  • Selenium
    • This supplement has 100 mcg
    • Recommended Dietary Allowance in men: 55 mcg
    • Recommended Dietary Allowance in women: 55 mcg
    • Tolerable Upper Intake Level: 400 mcg
  • Copper
    • This supplement has 1 mg
    • Recommended Dietary Allowance in men: 0.9 mg
    • Recommended Dietary Allowance in women: 0.9 mg
    • Tolerable Upper Intake Level: 10 mg
  • Manganese
    • This supplement has 10 mg
    • Adequate Intake in men: 2.3 mg
    • Adequate Intake in women: 1.8 mg
    • Tolerable Upper Intake Level: 11 mg

Last updated: February 5, 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