California Gold Nutrition Stabilized R-Lipoic Acid
vs
NOW Foods Biotin
Supplement Comparison

  • Vitamin B7 (Biotin): NOW Foods Biotin has 33× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 3 nutrients compared
Bar chart: per-serving label amounts and listed forms for California Gold Nutrition Stabilized R-Lipoic Acid vs NOW Foods Biotin.

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Frequently asked questions

Which active ingredients does California Gold Nutrition Stabilized R-Lipoic Acid have?

  • Vitamin B7 (Biotin) appears as D-Biotin
  • R-Lipoic Acid appears as Sodium R-Lipoic Acid

Which active ingredients does NOW Foods Biotin have?

  • Vitamin B7 (Biotin) appears as D-Biotin

Which categories do California Gold Nutrition Stabilized R-Lipoic Acid and NOW Foods Biotin belong to?

  • Antioxidant Complex
  • Single Vitamin

What health concerns do California Gold Nutrition Stabilized R-Lipoic Acid and NOW Foods Biotin address?

  • Antioxidant Support
  • Cellular Health
  • Energy & Metabolism
  • General Health
  • Immune System Support
  • Skin, Hair & Nail Health

Which product has a higher amount of Vitamin B7 (Biotin) per serving?

  • NOW Foods Biotin has the highest total amount of Vitamin B7 (Biotin): 5000 mcg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • California Gold Nutrition Stabilized R-Lipoic Acid: 1 capsule
    • NOW Foods Biotin: 1 capsule
  • Vitamin B7 (Biotin)
    • This supplement has 150 mcg
    • Adequate Intake in men: 30 mcg
    • Adequate Intake in women: 30 mcg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B7 (Biotin)
    • This supplement has 5000 mcg
    • Adequate Intake in men: 30 mcg
    • Adequate Intake in women: 30 mcg
    • 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.
  • Questions? Read our Frequently Asked Questions or contact us, we’re here to help.
  • See an error? Report it through our Contact page.
  • Author: VIOscan Research Team