Douglas Laboratories Glucosamine Plus ™ Extra Strength
vs
Metagenics ChondroCare
Supplement Comparison

  • Glucosamine Sulfate: same total amount on both labels
  • Chondroitin Sulfate: same total amount on both labels
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 14 nutrients compared
Bar chart: per-serving label amounts and listed forms for Douglas Laboratories Glucosamine Plus ™ Extra Strength vs Metagenics ChondroCare.

Frequently asked questions

Which active ingredients does Douglas Laboratories Glucosamine Plus ™ Extra Strength have?

  • Glucosamine Sulfate appears as Glucosamine Sulfate 2KCl (from crab and shrimp)
  • Chondroitin Sulfate

Which active ingredients does Metagenics ChondroCare have?

  • Zinc appears as Zinc Citrate
  • Selenium appears as L-Selenomethionine
  • Copper appears as Copper Citrate
  • Manganese appears as Manganese Citrate
  • Potassium appears as Potassium from D-Glucosamine Sulfate Potassium Chloride
  • Methylsulfonylmethane (MSM)
  • Glucosamine Sulfate appears as D-Glucosamine Sulfate Potassium Chloride
  • Chondroitin Sulfate

Which categories do Douglas Laboratories Glucosamine Plus ™ Extra Strength and Metagenics ChondroCare belong to?

  • Joint Formula

What health concerns do Douglas Laboratories Glucosamine Plus ™ Extra Strength and Metagenics ChondroCare address?

  • Anti-Inflammatory Support
  • Joint & Bone Health

Which product has a higher amount of Glucosamine Sulfate per serving?

  • Both products list the same total amount of Glucosamine Sulfate per serving

Which product has a higher amount of Chondroitin Sulfate per serving?

  • Both products list the same total amount of Chondroitin Sulfate per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Douglas Laboratories Glucosamine Plus ™ Extra Strength: 1 capsule
    • Metagenics ChondroCare: 2 tablets
  • Zinc
    • This supplement has 5 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 0.5 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 0.5 mg
    • Adequate Intake in men: 2.3 mg
    • Adequate Intake in women: 1.8 mg
    • Tolerable Upper Intake Level: 11 mg
  • Potassium
    • This supplement has 80 mg
    • Adequate Intake in men: 3400 mg
    • Adequate Intake in women: 2600 mg
    • Tolerable Upper Intake Level: Not established

Last updated: January 3, 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.
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  • Author: VIOscan Research Team