PlainVitamins

Thyrenol

by Approved Science · capsule · 60 capsules

  • On the market (NIH)
  • UPC X002L9FFYP
  • DSLD label 319826
  • Serving 1 capsule; amounts per 2 capsules
  • 30 servings

Thyrenol by Approved Science lists 16 ingredients, 16 with an amount per serving of 2 capsules, such as 204 mg of magnesium, 10 mg of zinc, 2 mg of manganese and 260 mcg of selenium. Its current label entered the NIH Dietary Supplement Label Database on October 24, 2024.

What is in Thyrenol?

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).

Thyrenol: Supplement Facts rows against the market (DSLD label 319826, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesiumas Magnesium Oxide204 mg49%Magnesium in Thyrenol against 14,003 products204 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg204 mg

Higher than 81% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 408 mg. 1.2 times the adult UL a day.

Zincas Zinc Oxide10 mg91%Zinc in Thyrenol against 13,186 products10 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg10 mg

51% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 20 mg.

Manganeseas Manganese Sulfate2 mg87%Manganese in Thyrenol against 7,016 products2 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg2 mg

38% of 7,016 products listing manganese give more (median 2 mg). Per day at the most servings: 4 mg.

Seleniumas Selenium Amino Acid Chelate260 mcg472%Selenium in Thyrenol against 7,658 products260 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg260 mcg

Higher than 99% of 7,658 products listing selenium (median 55 mcg). Per day at the most servings: 520 mcg. 1.3 times the adult UL a day.

Copperas Copper Gluconate200 mcg22%Copper in Thyrenol against 6,468 products0.2 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.2 mg

88% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 0.4 mg.

Iodineas Potassium Iodide150 mcg100%Iodine in Thyrenol against 6,382 products150 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg150 mcg

15% of 6,382 products listing iodine give more (median 150 mcg). Per day at the most servings: 300 mcg.

Vitamin B12as Methylcobalamin100 mcg4,167%Vitamin B12 in Thyrenol 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.

Molybdenumas Molybdenum Amino Acid Chelate52 mcg116%Molybdenum in Thyrenol against 4,390 products52 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg52 mcg

Higher than 59% of 4,390 products listing molybdenum (median 50 mcg). Per day at the most servings: 104 mcg.

L-Tyrosine304 mgTyrosine in Thyrenol against 1,680 products304 mg per serving; the middle half of products list 150 mg to 989 mg, the median 500 mg.304 mg

59% of 1,680 products listing tyrosine give more (median 500 mg). Per day at the most servings: 608 mg.

Magnoliaas Schisandra chinensis250 mgMagnolia in Thyrenol against 123 products250 mg per serving; the middle half of products list 50 mg to 325 mg, the median 150 mg.250 mg

Higher than 65% of 123 products listing magnolia (median 150 mg). Per day at the most servings: 500 mg.

Ashwagandhaas Withania somnifera200 mgAshwagandha in Thyrenol against 1,646 products200 mg per serving; the middle half of products list 125 mg to 500 mg, the median 250 mg.200 mg

51% of 1,646 products listing ashwagandha give more (median 250 mg). Per day at the most servings: 400 mg.

Bladderwrackas Fucus vesiculosus60 mgBladderwrack in Thyrenol against 188 products60 mg per serving; the middle half of products list 50 mg to 500 mg, the median 77.5 mg.60 mg

53% of 188 products listing bladderwrack give more (median 77.5 mg). Per day at the most servings: 120 mg.

Kelpas Ascophyllum nodosum20 mgKelp in Thyrenol against 333 products20 mg per serving; the middle half of products list 20 mg to 100 mg, the median 50 mg.20 mg

73% of 333 products listing kelp give more (median 50 mg). Per day at the most servings: 40 mg.

Gotu Kola10 mgGotu Kola in Thyrenol against 393 products10 mg per serving; the middle half of products list 50 mg to 225 mg, the median 100 mg.10 mg

96% of 393 products listing gotu kola give more (median 100 mg). Per day at the most servings: 20 mg.

Coleus Forskohliias Plectranthus barbatus10 mgColeus in Thyrenol against 303 products10 mg per serving; the middle half of products list 73.5 mg to 250 mg, the median 125 mg.10 mg

96% of 303 products listing coleus give more (median 125 mg). Per day at the most servings: 20 mg.

Gugulipidas Commiphora wightii10 mgGuggul in Thyrenol against 279 products10 mg per serving; the middle half of products list 50 mg to 350 mg, the median 100 mg.10 mg

97% of 279 products listing guggul give more (median 100 mg). Per day at the most servings: 20 mg.

Source: NIH ODS Dietary Supplement Label Database, label 319826 (entered October 24, 2024), 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?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • At 2 servings a day, the most its directions give, the label lists 408 mg of magnesium, 1.2 times the adult Tolerable Upper Intake Level.
  • At 2 servings a day, the most its directions give, the label lists 520 mcg of selenium, 1.3 times the adult Tolerable Upper Intake Level.
  • 88% of the 6,468 products that print an amount of copper list more than its 0.2 mg of copper (median 1 mg).
  • 96% of the 393 products that print an amount of gotu kola list more than its 10 mg of gotu kola (median 100 mg).
  • 96% of the 303 products that print an amount of coleus list more than its 10 mg of coleus (median 125 mg).
  • 97% of the 279 products that print an amount of guggul list more than its 10 mg of gugulipid (filed by NIH under guggul) (median 100 mg).

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?

The products whose ingredient lists overlap most with Thyrenol's, rare ingredients counting for more.

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
Directions: As a dietary supplement, take two capsules daily, (one in the morning and one in the afternoon), before meals with an 8 oz. glass of water.
Warnings
Caution: Do not exceed recommended dose. Do not use if safety seal is damaged or missing.
Pregnant women or nursing mothers, children under 18, and individuals with a known medical condition, should consult with a physician before taking this or any other dietary supplement.
Pregnant women or nursing mothers, children under 18, and individuals with a known medical condition, should consult with a physician before taking this or any other dietary supplement. Keep out of reach of children.
Allergens and what it does not contain
Made with GMO free ingredients
Storage
Store at room temperature.

Source: label statements in DSLD label 319826.

What else is on the label?

Other ingredients: Cellulose.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Vegan friendly Made in USA No animal testing GMP Good Manufacturing Practice Quality product.

How many labels does Thyrenol have?

One label is on file, entered on October 24, 2024.

  1. Label 319826 (current) Entered October 24, 2024 · on the market · 60 capsules · UPC X002L9FFYP

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

Who makes it?

The label names Approved Science (distributor), New York, NY. All Approved Science products.

Where next?