PlainVitamins

Thyrocsin Thyroid Cofactors

by Thorne Research · capsule · 120 vegetarian capsules

  • Off the market since January 2018 (NIH)
  • UPC 6 93749 78401 2
  • DSLD label 64028
  • Serving 2 capsules
  • 60 servings

Thyrocsin Thyroid Cofactors by Thorne Research lists 9 ingredients, 9 with an amount per serving of 2 capsules, such as 200 mg of vitamin C, 100 IU of vitamin E, 100 mcg of vitamin B12 and 225 mcg of iodine. Its current label entered the NIH Dietary Supplement Label Database on August 24, 2016.

What is in Thyrocsin Thyroid Cofactors?

Each row as the label prints it, per serving of 2 capsules. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Thyrocsin Thyroid Cofactors: Supplement Facts rows against the market (DSLD label 64028, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid200 mg333%Vitamin C in Thyrocsin Thyroid Cofactors against 18,583 products200 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg200 mg

Higher than 63% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 400 mg.

Vitamin Eas D-Alpha-TocopherylVitamin E (Form: as D-Alpha Tocopheryl)100 IU333%Vitamin E in Thyrocsin Thyroid Cofactors against 6,459 products100 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.100 IU

Higher than 71% of 6,459 products listing vitamin E (median 30 IU). Per day at the most servings: 200 IU.

Vitamin B12as MethylcobalaminVitamin B12 (Form: as Methylcobalamin)100 mcg1,667%Vitamin B12 in Thyrocsin Thyroid Cofactors against 14,425 products100 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg100 mcg

Higher than 61% of 14,425 products listing vitamin B12 (median 36 mcg). Per day at the most servings: 200 mcg.

Iodineas Potassium IodideIodine (Form: as Potassium Iodide)225 mcg150%Iodine in Thyrocsin Thyroid Cofactors against 6,382 products225 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg225 mcg

Higher than 90% of 6,382 products listing iodine (median 150 mcg). Per day at the most servings: 450 mcg.

Zincas TRAACS Zinc Bisglycinate ChelateZinc (Form: as TRAACS Zinc Bisglycinate Chelate)5 mg33%Zinc in Thyrocsin Thyroid Cofactors against 13,186 products5 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg5 mg

72% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 10 mg.

Seleniumas L-SelenomethionineSelenium (Form: as L-Selenomethionine)100 mcg143%Selenium in Thyrocsin Thyroid Cofactors against 7,658 products100 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg100 mcg

Higher than 65% of 7,658 products listing selenium (median 55 mcg). Per day at the most servings: 200 mcg.

Copperas Copper CitrateCopper (Form: as Copper Citrate)500 mcg25%Copper in Thyrocsin Thyroid Cofactors against 6,468 products0.5 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.5 mg

68% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 1 mg.

L-Tyrosine500 mgTyrosine in Thyrocsin Thyroid Cofactors against 1,680 products500 mg per serving; the middle half of products list 150 mg to 989 mg, the median 500 mg.500 mg

34% of 1,680 products listing tyrosine give more (median 500 mg). Per day at the most servings: 1,000 mg.

Ashwagandha extract90 mgAshwagandha in Thyrocsin Thyroid Cofactors against 1,646 products90 mg per serving; the middle half of products list 125 mg to 500 mg, the median 250 mg.90 mg

87% of 1,646 products listing ashwagandha give more (median 250 mg). Per day at the most servings: 180 mg.

Source: NIH ODS Dietary Supplement Label Database, label 64028 (entered August 24, 2016), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

The NIH database records 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

1 product lists the very same ingredients; the nearest amounts come first.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Use: Take 2 capsules two times daily or as recommended by your health-care practitioner.
Warnings
Tamper Evident: Use only if bottle is sealed.
Warning: If pregnant, nursing, or trying to conceive, consult your health-care practitioner before using this product.
Storage
Store tightly sealed in a cool, dry place.

Source: label statements in DSLD label 64028.

What else is on the label?

Other ingredients: Hypromellose (derived from Cellulose) Capsule, Leucine, Silicon Dioxide.

How many labels does Thyrocsin Thyroid Cofactors have?

8 labels are on file under this name since December 21, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 64028 (current) Entered August 24, 2016 · off the market January 10, 2018 · 120 vegetarian capsules · UPC 6 93749 78401 2
  2. Label 50622 Entered September 25, 2015 · off the market July 25, 2016 · 120 vegetarian capsules · UPC 6 93749 78401 2
  3. Label 50621 Entered September 25, 2015 · off the market August 13, 2015 · 120 vegetarian capsules · UPC 6 93749 78401 2
  4. Label 50619 Entered September 25, 2015 · off the market December 18, 2019 · 60 vegetarian capsules · UPC 6 93749 76501 1
  5. Label 50618 Entered September 25, 2015 · off the market August 13, 2015 · 60 vegetarian capsules · UPC 6 93749 76501 1
  6. Label 35582 Entered July 25, 2014 · off the market July 23, 2015 · 60 vegetarian capsules · UPC 6 93749 76501 1
  7. Label 16103 Entered December 21, 2012 · off the market July 23, 2015 · 120 vegetarian capsules · UPC 6 93749 78401 2
  8. Label 16085 Entered December 21, 2012 · off the market June 26, 2014 · 60 vegetarian capsules · UPC 6 93749 76501 1

DSLD also links this label to: Thyrocsin (image difference, same product), Thyrocsin (image difference, same product), Thyrocsin (image difference, same product), Thyrocsin (image difference, same product).

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Thorne Research, Inc. (manufacturer), Dover, Idaho. All Thorne Research products.

Where next?