Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C)
vs
Douglas Laboratories Glucosamine + MSM Forte
Supplement Comparison

  • Vitamin C: Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C) has 20× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 18 nutrients compared
Bar chart: per-serving label amounts and listed forms for Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C) vs Douglas Laboratories Glucosamine + MSM Forte.

Frequently asked questions

Which active ingredients does Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C) have?

  • Vitamin C appears as Calcium, Magnesium, Potassium Ascorbates and Ascorbic Acid
  • Calcium appears as Calcium Ascorbate and Carbonate Complex
  • Magnesium appears as Magnesium Ascorbate and Oxide Complex
  • Potassium appears as Potassium Ascorbate and Chloride Complex
  • Blend appears as Citrus Pectin and Citrus Bioflavonoids Complex

Which active ingredients does Douglas Laboratories Glucosamine + MSM Forte have?

  • Vitamin C appears as Ascorbic Acid
  • Methylsulfonylmethane (MSM) appears as OptiMSM Methylsulfonylmethane (MSM)
  • Glucosamine Sulfate appears as Glucosamine Sulfate 2KCl (from crab and shrimp)
  • Bromelain appears as Bromelain (Ananas comosus stem)
  • Grape (Vitis vinifera) Seed Extract appears as Grape Seed Extract (containing proanthocyanidins)

Which categories do Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C) and Douglas Laboratories Glucosamine + MSM Forte belong to?

  • Single Vitamin
  • Joint Formula

What health concerns do Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C) and Douglas Laboratories Glucosamine + MSM Forte address?

  • Antioxidant Support
  • General Health
  • Immune System Support
  • Anti-Inflammatory Support
  • Joint & Bone Health
  • Recovery & Repair

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

  • Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C) has the highest total amount of Vitamin C: 1000 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Douglas Laboratories Ascorbplex 1000™ (Buffered Vitamin C): 1 tablet
    • Douglas Laboratories Glucosamine + MSM Forte: 1 capsule
  • 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
  • Calcium
    • This supplement has 90 mg
    • Recommended Dietary Allowance in men: 1000 mg
    • Recommended Dietary Allowance in women: 1000 mg
    • Tolerable Upper Intake Level: 2500 mg
  • Potassium
    • This supplement has 60 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

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.
  • See an error? Report it through our Contact page.
  • Author: VIOscan Research Team