Jarrow Glucosamine + Chondroitin
vs
Douglas Laboratories Hydrolyzed Collagen+
Supplement Comparison

  • Vitamin C: Jarrow Glucosamine + Chondroitin has 20% more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 22 nutrients compared
Bar chart: per-serving label amounts and listed forms for Jarrow Glucosamine + Chondroitin vs Douglas Laboratories Hydrolyzed Collagen+.

Frequently asked questions

Which active ingredients does Jarrow Glucosamine + Chondroitin have?

  • Vitamin C appears as Ascorbic Acid
  • Manganese appears as Manganese Citrate
  • Sodium appears as Sodium from Chondroitin Sulfate Sodium
  • Potassium appears as Potassium from Glucosamine Sulfate 2KCl
  • Glucosamine Sulfate appears as Glucosamine Sulfate 2KCI
  • Chondroitin Sulfate appears as Chondroitin Sulfate Sodium

Which active ingredients does Douglas Laboratories Hydrolyzed Collagen+ have?

  • Vitamin C appears as Ascorbic Acid
  • Zinc appears as Zinc Gluconate
  • Copper appears as Copper Gluconate
  • Collagen Peptides appears as VERISOL Bioactive Collagen Peptides
  • Ceramides appears as HydroPeach Ceramides (peach fruit extract standardized to 3% glycosphingolipids)
  • Hyaluronic Acid appears as Hyaluronic Acid from Sodium Hyaluronate
  • Protein

Which categories do Jarrow Glucosamine + Chondroitin and Douglas Laboratories Hydrolyzed Collagen+ belong to?

  • Joint Formula
  • Collagen

What health concerns do Jarrow Glucosamine + Chondroitin and Douglas Laboratories Hydrolyzed Collagen+ address?

  • Joint & Bone Health
  • Recovery & Repair
  • Healthy Aging & Longevity
  • Skin, Hair & Nail Health

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

  • Jarrow Glucosamine + Chondroitin has the highest total amount of Vitamin C: 60 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Jarrow Glucosamine + Chondroitin: 4 capsules
    • Douglas Laboratories Hydrolyzed Collagen+: 1 scoop
  • Vitamin C
    • This supplement has 60 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Manganese
    • This supplement has 1 mg
    • Adequate Intake in men: 2.3 mg
    • Adequate Intake in women: 1.8 mg
    • Tolerable Upper Intake Level: 11 mg
  • Sodium
    • This supplement has 120 mg
    • Adequate Intake in men: 1500 mg
    • Adequate Intake in women: 1500 mg
    • Tolerable Upper Intake Level: Not established
  • Potassium
    • This supplement has 260 mg
    • Adequate Intake in men: 3400 mg
    • Adequate Intake in women: 2600 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin C
    • This supplement has 50 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Zinc
    • This supplement has 1 mg
    • Recommended Dietary Allowance in men: 11 mg
    • Recommended Dietary Allowance in women: 8 mg
    • Tolerable Upper Intake Level: 40 mg
  • Copper
    • This supplement has 0.1 mg
    • Recommended Dietary Allowance in men: 0.9 mg
    • Recommended Dietary Allowance in women: 0.9 mg
    • Tolerable Upper Intake Level: 10 mg

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).
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  • 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.
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  • Author: VIOscan Research Team