PlainVitamins

Thyroid Select

by Moss Nutrition · capsule · 120 vegetarian capsules

  • On the market (NIH)
  • UPC M049
  • DSLD label 334955
  • Serving 2 capsules
  • 60 servings

Thyroid Select by Moss Nutrition lists 10 ingredients, 10 with an amount per serving of 2 capsules, such as 600 mcg RAE of vitamin A, 150 mcg of iodine, 15 mg of zinc and 50 mcg of selenium. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2025.

What is in Thyroid Select?

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).

Thyroid Select: Supplement Facts rows against the market (DSLD label 334955, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Vitamin A Palmitate600 mcg RAE67%
Iodineas Potassium Iodide150 mcg100%Iodine in Thyroid Select 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).

Zincas Albion Zinc Bisglycinate Chelate15 mg136%Zinc in Thyroid Select against 13,186 products15 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg15 mg

Higher than 56% of 13,186 products listing zinc (median 11 mg).

Seleniumas Selenomethionine50 mcg91%Selenium in Thyroid Select against 7,658 products50 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg50 mcg

56% of 7,658 products listing selenium give more (median 55 mcg).

Manganeseas Albion Manganese Bisglycinate Chelate5 mg217%Manganese in Thyroid Select against 7,016 products5 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg5 mg

Higher than 80% of 7,016 products listing manganese (median 2 mg).

N-Acetyl L-Tyrosine200 mgN-Acetyl Tyrosine in Thyroid Select against 344 products200 mg per serving; the middle half of products list 100 mg to 500 mg, the median 250 mg.200 mg

58% of 344 products listing N-acetyl tyrosine give more (median 250 mg).

L-Leucine200 mgLeucine in Thyroid Select against 2,056 products0.2 g per serving; the middle half of products list 1 g to 3.5 g, the median 2.5 g.0.2 g

90% of 2,056 products listing leucine give more (median 2.5 g).

Ashwagandha root extractas Withanolides200 mgAshwagandha in Thyroid Select 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).

Coleus forskohlii root extractas Forskolin100 mgColeus in Thyroid Select against 303 products100 mg per serving; the middle half of products list 73.5 mg to 250 mg, the median 125 mg.100 mg

51% of 303 products listing coleus give more (median 125 mg).

Bacopa leaf extractas Bacosides50% bacosides100 mgBacopa in Thyroid Select against 481 products100 mg per serving; the middle half of products list 100 mg to 300 mg, the median 200 mg.100 mg

64% of 481 products listing bacopa give more (median 200 mg).

Source: NIH ODS Dietary Supplement Label Database, label 334955 (entered September 25, 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?

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:

  • 90% of the 2,056 products that print an amount of leucine list more than its 0.2 g of L-leucine (filed by NIH under leucine) (median 2.5 g).

The NIH database records one serving 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 Thyroid Select'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
Suggested use: 2 capsules per day with food or as directed by your healthcare professional.
Warnings
Warning: If you are taking medication, have a medical condition or an upcoming medical procedure, or are pregnant or nursing consult a physician before using.
If adverse reactions occur, discontinue use & consult your healthcare practitioner.
Keep out of reach of children.
Allergens and what it does not contain
Does not contain gluten.
Storage
Store sealed in a cool, dry place.

Source: label statements in DSLD label 334955.

What else is on the label?

Other ingredients: Hypromellose, Microcrystalline Cellulose, Silicon Dioxide, Stearate.

How many labels does Thyroid Select have?

4 labels are on file under this name since February 25, 2019: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 334955 (current) Entered September 25, 2025 · on the market · 120 vegetarian capsules · UPC M049
  2. Label 247757 Entered May 22, 2021 · off the market March 4, 2025 · 120 vegetarian capsules · UPC M049
  3. Label 217694 Entered April 23, 2020 · off the market February 25, 2021 · 120 vegetarian capsules · UPC M049
  4. Label 191116 Entered February 25, 2019 · off the market November 15, 2019 · 120 vegetarian capsules · UPC M049

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

Who makes it?

The label names Moss Nutrition Products, Inc. (distributor), Hadley, MA. All Moss Nutrition products.

Where next?