NOW Foods C-1000 Zinc & D-3
vs
Douglas Laboratories Basic Minerals
Supplement Comparison

  • Zinc: NOW Foods C-1000 Zinc & D-3 has 50% more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 28 nutrients compared
Bar chart: per-serving label amounts and listed forms for NOW Foods C-1000 Zinc & D-3 vs Douglas Laboratories Basic Minerals.

Try the VIOscan dashboard demo for free

Build comparison charts in seconds – no signup or card needed

This is a free preview of the $9.99/month premium dashboard

Use the interactive demo with multivitamins samples

Try Free Demo

Frequently asked questions

Which active ingredients does NOW Foods C-1000 Zinc & D-3 have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin D appears as Cholecalciferol (D3)
  • Zinc appears as Zinc Bisglycinate

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 NOW Foods C-1000 Zinc & D-3 and Douglas Laboratories Basic Minerals belong to?

  • Single Mineral
  • Single Vitamin
  • Mineral Complex

What health concerns do NOW Foods C-1000 Zinc & D-3 and Douglas Laboratories Basic Minerals address?

  • Antioxidant Support
  • General Health
  • Immune System Support
  • Joint & Bone Health

Which product has a higher amount of Zinc per serving?

  • NOW Foods C-1000 Zinc & D-3 has the highest total amount of Zinc: 15 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • NOW Foods C-1000 Zinc & D-3: 1 capsule
    • Douglas Laboratories Basic Minerals: 3 capsules
  • Vitamin C
    • This supplement has 1000 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
  • Zinc
    • This supplement has 15 mg
    • Recommended Dietary Allowance in men: 11 mg
    • Recommended Dietary Allowance in women: 8 mg
    • Tolerable Upper Intake Level: 40 mg
  • 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 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.
  • 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