Doctor's Best Sustained-Release Niacin
vs
California Gold Nutrition Vitamin B Complex
Supplement Comparison

  • Vitamin B3 (Niacin): Doctor's Best Sustained-Release Niacin has 16× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 14 nutrients compared
Bar chart: per-serving label amounts and listed forms for Doctor's Best Sustained-Release Niacin vs California Gold Nutrition Vitamin B Complex.

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Frequently asked questions

Which active ingredients does Doctor's Best Sustained-Release Niacin have?

  • Vitamin B3 (Niacin) appears as NiaXtend Niacin

Which active ingredients does California Gold Nutrition Vitamin B Complex have?

  • Vitamin B1 (Thiamin) appears as Thiamin HCl
  • Vitamin B2 (Riboflavin) appears as Riboflavin and Riboflavin 5-Phosphate Sodium
  • Vitamin B3 (Niacin) appears as Niacinamide
  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl and Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as 5-MTHF, L-5-Methyltetrahydrofolate Calcium
  • Vitamin B7 (Biotin) appears as D-Biotin
  • Vitamin B5 (Pantothenic Acid) appears as D-Calcium Pantothenate

Which categories do Doctor's Best Sustained-Release Niacin and California Gold Nutrition Vitamin B Complex belong to?

  • Single Vitamin
  • B-Complex Formula

What health concerns do Doctor's Best Sustained-Release Niacin and California Gold Nutrition Vitamin B Complex address?

  • Cholesterol Support
  • Metabolic Support
  • Heart & Cardiovascular Health
  • Energy & Metabolism
  • Neurological Support

Which product has a higher amount of Vitamin B3 (Niacin) per serving?

  • Doctor's Best Sustained-Release Niacin has the highest total amount of Vitamin B3 (Niacin): 500 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Doctor's Best Sustained-Release Niacin: 1 tablet
    • California Gold Nutrition Vitamin B Complex: 1 capsule
  • Vitamin B3 (Niacin)
    • This supplement has 500 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg
  • Vitamin B1 (Thiamin)
    • This supplement has 24 mg
    • Recommended Dietary Allowance in men: 1.2 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B2 (Riboflavin)
    • This supplement has 26 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B3 (Niacin)
    • This supplement has 32 mg
    • Recommended Dietary Allowance in men: 16 mg
    • Recommended Dietary Allowance in women: 14 mg
    • Tolerable Upper Intake Level: 35 mg
  • Vitamin B6 (Pyridoxine)
    • This supplement has 34 mg
    • Recommended Dietary Allowance in men: 1.3 mg
    • Recommended Dietary Allowance in women: 1.3 mg
    • Tolerable Upper Intake Level: 100 mg
  • Vitamin B9 (Folate)
    • This supplement has 410 mcg DFE
    • Recommended Dietary Allowance in men: 400 mcg DFE
    • Recommended Dietary Allowance in women: 400 mcg DFE
    • Tolerable Upper Intake Level: 1000 mcg DFE
  • Vitamin B7 (Biotin)
    • This supplement has 300 mcg
    • Adequate Intake in men: 30 mcg
    • Adequate Intake in women: 30 mcg
    • Tolerable Upper Intake Level: Not established

Last updated: February 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).
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  • 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