Thyrocsin
by Thorne · capsule · 120 capsules
- On the market (NIH)
- UPC 6 93749 78401 2
- DSLD label 336359
- Serving 2 capsules
- 60 servings
Thyrocsin by Thorne lists 9 ingredients, 9 with an amount per serving of 2 capsules, such as 200 mg of vitamin C, 67 mg 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 22, 2025.
What is in Thyrocsin?
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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin Cas Ascorbic Acid | 200 mg | 222% | 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-Tocopheryl | 67 mg | 447% | |
| Vitamin B12as Methylcobalamin | 100 mcg | 4,167% | Higher than 61% of 14,425 products listing vitamin B12 (median 36 mcg). Per day at the most servings: 200 mcg. |
| Iodineas Potassium Iodide | 225 mcg | 150% | Higher than 90% of 6,382 products listing iodine (median 150 mcg). Per day at the most servings: 450 mcg. |
| Zincas Albion Zinc Bisglycinate ChelateTRAACS | 5 mg | 45% | 72% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 10 mg. |
| Seleniumas L-Selenomethionine | 100 mcg | 182% | Higher than 65% of 7,658 products listing selenium (median 55 mcg). Per day at the most servings: 200 mcg. |
| Copperas Albion Copper Bisglycinate ChelateTRAACS | 500 mcg | 56% | 68% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 1 mg. |
| L-Tyrosine | 500 mg | 34% of 1,680 products listing tyrosine give more (median 500 mg). Per day at the most servings: 1,000 mg. | |
| Ksm-66as Ashwagandha Root Extract | 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 336359 (entered August 22, 2025), version 9.4.0. See the label on DSLD or its label image (PDF). 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.
- Thyrocsin Thyroid CofactorsThorne Research · off the market same ingredients
- Peak Thyroid SupportPeak Pure & Natural 6 shared, 75% alike
- Thyroid SupportLuckyVitamin 7 shared, 71% alike
- Thyroid EnergyNOW 7 shared, 71% alike
- Ortho ThyroidProtocol For Life Balance · off the market 7 shared, 71% alike
- Thyroid EnergyBaar Nature's Blessing 7 shared, 71% alike
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, do not use this product.
- Allergens and what it does not contain
- Gluten free
- Storage
- Store tightly sealed in a cool, dry place.
Source: label statements in DSLD label 336359.
What else is on the label?
Other ingredients: Hypromellose, Leucine, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Manufactured in the USA using US & imported ingredients NSF Contents Certified. Listed with: NSF certified (contents or GMP) (a seal is the label's claim; the certifier's own list confirms it).
How many labels does Thyrocsin have?
5 labels are on file under this name since October 25, 2018: other sizes, label designs and reformulations. The current one leads this page.
- Label 336359 (current) Entered August 22, 2025 · on the market · 120 capsules · UPC 6 93749 78401 2
- Label 306293 Entered February 22, 2024 · off the market March 24, 2025 · 120 capsules · UPC 6 93749 78401 2
- Label 288633 Entered September 25, 2023 · off the market July 21, 2023 · 120 capsules · UPC 6 93749 78401 2
- Label 239036 Entered November 21, 2020 · off the market December 9, 2022 · 120 capsules · UPC 6 93749 78401 2
- Label 182427 Entered October 25, 2018 · off the market October 2, 2020 · 120 capsules · UPC 6 93749 78401 2
DSLD also links this label to: Thyrocsin Thyroid Cofactors (image difference, same product), Thyrocsin Thyroid Cofactors (image difference, same product), Thyrocsin Thyroid Cofactors (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). All Thorne products.