Klean Athlete Klean Collagen+C Tropical Fruit Flavor
vs
Metagenics Ultra Potent-C Vitamin C
Supplement Comparison

  • Vitamin C: Metagenics Ultra Potent-C Vitamin C 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
    • 10 nutrients compared
Bar chart: per-serving label amounts and listed forms for Klean Athlete Klean Collagen+C Tropical Fruit Flavor vs Metagenics Ultra Potent-C Vitamin C.

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Frequently asked questions

Which active ingredients does Klean Athlete Klean Collagen+C Tropical Fruit Flavor have?

  • Vitamin C appears as Mixed ascorbates from organic amla (Phyllanthus emblica)
  • Collagen Peptides appears as Hydrolyzed Collagen (from bovine)
  • Protein

Which active ingredients does Metagenics Ultra Potent-C Vitamin C have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin B3 (Niacin) appears as Nicotinic Acid
  • L-Lysine appears as L-Lysine Monohydrochloride
  • Citrus Bioflavonoid Complex

Which categories do Klean Athlete Klean Collagen+C Tropical Fruit Flavor and Metagenics Ultra Potent-C Vitamin C belong to?

  • Collagen
  • Single Vitamin

What health concerns do Klean Athlete Klean Collagen+C Tropical Fruit Flavor and Metagenics Ultra Potent-C Vitamin C address?

  • Athletic Performance
  • Healthy Aging & Longevity
  • Joint & Bone Health
  • Recovery & Repair
  • Skin, Hair & Nail Health
  • Immune System Support

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

  • Metagenics Ultra Potent-C Vitamin C has the highest total amount of Vitamin C: 250 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Klean Athlete Klean Collagen+C Tropical Fruit Flavor: 1 scoop
    • Metagenics Ultra Potent-C Vitamin C: 1 tablet
  • 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
  • Vitamin C
    • This supplement has 250 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin B3 (Niacin)
    • This supplement has 17.5 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg

Last updated: February 9, 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.
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  • Author: VIOscan Research Team