California Gold Nutrition Organic Spirulina
vs
Metagenics Ultra Potent-C 500 Vitamin C
Supplement Comparison

  • Sodium: California Gold Nutrition Organic Spirulina has 3.0× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 15 nutrients compared
Bar chart: per-serving label amounts and listed forms for California Gold Nutrition Organic Spirulina vs Metagenics Ultra Potent-C 500 Vitamin C.

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Frequently asked questions

Which active ingredients does California Gold Nutrition Organic Spirulina have?

  • Iron
  • Sodium
  • Chlorophyllin
  • Spirulina (Arthrospira platensis) Microalgae appears as Parry's Organic Spirulina
  • Phycocyanin
  • Total Carotenoids

Which active ingredients does Metagenics Ultra Potent-C 500 Vitamin C have?

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

Which categories do California Gold Nutrition Organic Spirulina and Metagenics Ultra Potent-C 500 Vitamin C belong to?

  • Algae
  • Single Vitamin

What health concerns do California Gold Nutrition Organic Spirulina and Metagenics Ultra Potent-C 500 Vitamin C address?

  • Antioxidant Support
  • General Health
  • Immune System Support

How do the serving sizes compare between the two supplements?

  • Serving size:
    • California Gold Nutrition Organic Spirulina: 3 tablets
    • Metagenics Ultra Potent-C 500 Vitamin C: 1 tablet
  • Iron
    • This supplement has 0.7 mg
    • Recommended Dietary Allowance in men: 8 mg
    • Recommended Dietary Allowance in women: 18 mg
    • Tolerable Upper Intake Level: 45 mg
  • Sodium
    • This supplement has 15 mg
    • Adequate Intake in men: 1500 mg
    • Adequate Intake in women: 1500 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin C
    • This supplement has 500 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 35 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg
  • Sodium
    • This supplement has 5 mg
    • Adequate Intake in men: 1500 mg
    • Adequate Intake in women: 1500 mg
    • Tolerable Upper Intake Level: Not established

Last updated: February 20, 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