California Gold Nutrition Organic Spirulina
vs
Natural Factors PGX® Daily Singles
Supplement Comparison

  • Sodium: Natural Factors PGX® Daily Singles has 4.7× 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 California Gold Nutrition Organic Spirulina vs Natural Factors PGX® Daily Singles.

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 Natural Factors PGX® Daily Singles have?

  • Sodium
  • Dietary Fiber appears as Soluble Fiber
  • Dietary Fiber appears as PGX (PolyGlycopleX konjac-mannan, xanthan gum, sodium alginate)

Which categories do California Gold Nutrition Organic Spirulina and Natural Factors PGX® Daily Singles belong to?

  • Algae
  • Prebiotic

What health concerns do California Gold Nutrition Organic Spirulina and Natural Factors PGX® Daily Singles address?

  • Antioxidant Support
  • General Health
  • Immune System Support
  • Digestive Support
  • Weight Management

How do the serving sizes compare between the two supplements?

  • Serving size:
    • California Gold Nutrition Organic Spirulina: 3 tablets
    • Natural Factors PGX® Daily Singles: 1 packet
  • 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
  • Sodium
    • This supplement has 70 mg
    • Adequate Intake in men: 1500 mg
    • Adequate Intake in women: 1500 mg
    • Tolerable Upper Intake Level: Not established

Last updated: January 2, 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