Thorne Thyrocsin
vs
Jarrow B-Right Optimized B-Complex
Supplement Comparison

  • Vitamin B12 (Cobalamin): same total amount on both labels
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 35 nutrients compared
Bar chart: per-serving label amounts and listed forms for Thorne Thyrocsin vs Jarrow B-Right Optimized B-Complex.

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Frequently asked questions

Which active ingredients does Thorne Thyrocsin have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin E appears as d-Alpha Tocopherol
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin
  • Iodine appears as Potassium Iodide
  • Zinc appears as TRAACS Zinc Bisglycinate (Albion)
  • Selenium appears as L-Selenomethionine
  • Copper appears as TRAACS Copper Bisglycinate (Albion)
  • L-Tyrosine
  • Ashwagandha appears as KSM-66 Ashwagandha

Which active ingredients does Jarrow B-Right Optimized B-Complex have?

  • Vitamin B1 (Thiamin) appears as Thiamin Mononitrate
  • Vitamin B2 (Riboflavin) appears as Riboflavin 5-Phosphate Sodium
  • Vitamin B3 (Niacin) appears as Nicotinic Acid
  • Vitamin B6 (Pyridoxine) appears as Pyridoxine HCl and Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as Quatrefolic (6S)-5-MTHF Glucosamine Salt
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin
  • Vitamin B7 (Biotin) appears as D-Biotin
  • Vitamin B5 (Pantothenic Acid) appears as Calcium Pantothenate
  • Choline appears as Choline Bitartrate
  • PABA
  • Inositol
  • Pantethine

Which categories do Thorne Thyrocsin and Jarrow B-Right Optimized B-Complex belong to?

  • Hormone Support Formula
  • B-Complex Formula

What health concerns do Thorne Thyrocsin and Jarrow B-Right Optimized B-Complex address?

  • Thyroid Support
  • Energy & Metabolism
  • Brain, Focus & Cognitive Function
  • Immune System Support
  • Methylation Support
  • Neurological Support

Which product has a higher amount of Vitamin B12 (Cobalamin) per serving?

  • Both products list the same total amount of Vitamin B12 (Cobalamin) per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Thorne Thyrocsin: 2 capsules
    • Jarrow B-Right Optimized B-Complex: 1 capsule
  • Vitamin C
    • This supplement has 200 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin E
    • This supplement has 67 mg
    • Recommended Dietary Allowance in men: 15 mg
    • Recommended Dietary Allowance in women: 15 mg
    • Tolerable Upper Intake Level: 1000 mg
  • Vitamin B12 (Cobalamin)
    • This supplement has 100 mcg
    • Recommended Dietary Allowance in men: 2.4 mcg
    • Recommended Dietary Allowance in women: 2.4 mcg
    • Tolerable Upper Intake Level: Not established
  • Iodine
    • This supplement has 225 mcg
    • Recommended Dietary Allowance in men: 150 mcg
    • Recommended Dietary Allowance in women: 150 mcg
    • Tolerable Upper Intake Level: 1100 mcg
  • Zinc
    • This supplement has 5 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 100 mcg
    • Recommended Dietary Allowance in men: 55 mcg
    • Recommended Dietary Allowance in women: 55 mcg
    • Tolerable Upper Intake Level: 400 mcg
  • Vitamin B1 (Thiamin)
    • This supplement has 25 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 25 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 25 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 25 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 400 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 B12 (Cobalamin)
    • This supplement has 100 mcg
    • Recommended Dietary Allowance in men: 2.4 mcg
    • Recommended Dietary Allowance in women: 2.4 mcg
    • Tolerable Upper Intake Level: Not established

Last updated: February 10, 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