California Gold Nutrition Immune Complex 4
vs
Douglas Laboratories Vitamin D 5000 IU
Supplement Comparison

  • Vitamin D: Douglas Laboratories Vitamin D 5000 IU 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
    • 7 nutrients compared
Bar chart: per-serving label amounts and listed forms for California Gold Nutrition Immune Complex 4 vs Douglas Laboratories Vitamin D 5000 IU.

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Frequently asked questions

Which active ingredients does California Gold Nutrition Immune Complex 4 have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin D appears as Cholecalciferol (D3)
  • Zinc appears as Zinc Picolinate
  • Selenium appears as L-Selenomethionine

Which active ingredients does Douglas Laboratories Vitamin D 5000 IU have?

  • Vitamin D appears as Cholecalciferol (D3)

Which categories do California Gold Nutrition Immune Complex 4 and Douglas Laboratories Vitamin D 5000 IU belong to?

  • Antioxidant Complex
  • Single Vitamin

What health concerns do California Gold Nutrition Immune Complex 4 and Douglas Laboratories Vitamin D 5000 IU address?

  • Antioxidant Support
  • General Health
  • Immune System Support
  • Brain, Focus & Cognitive Function
  • Heart & Cardiovascular Health
  • Joint & Bone Health

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

  • Douglas Laboratories Vitamin D 5000 IU has the highest total amount of Vitamin D: 5000 IU per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • California Gold Nutrition Immune Complex 4: 1 capsule
    • Douglas Laboratories Vitamin D 5000 IU: 1 tablet
  • 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 D
    • This supplement has 1000 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Zinc
    • This supplement has 10 mg
    • Recommended Dietary Allowance in men: 11 mg
    • Recommended Dietary Allowance in women: 8 mg
    • Tolerable Upper Intake Level: 40 mg
  • Selenium
    • This supplement has 50 mcg
    • Recommended Dietary Allowance in men: 55 mcg
    • Recommended Dietary Allowance in women: 55 mcg
    • Tolerable Upper Intake Level: 400 mcg
  • Vitamin D
    • This supplement has 5000 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU

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