PlainVitamins

Thyroid Support

by Zoi Research · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 8 98220 01744 7
  • DSLD label 319906
  • Serving 2 capsules
  • 30 servings

Thyroid Support by Zoi Research lists 16 ingredients, 16 with an amount per serving of 2 capsules, such as 750 mcg of vitamin A, 30 mg of vitamin C, 10 mcg (400 IU) of vitamin D and 15 mg of vitamin B6. Its current label entered the NIH Dietary Supplement Label Database on October 24, 2024.

What is in Thyroid Support?

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 Support: Supplement Facts rows against the market (DSLD label 319906, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Retinyl Palmitate750 mcg83%
Vitamin Cas Ascorbic Acid30 mg33%Vitamin C in Thyroid Support against 18,583 products30 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg30 mg

83% of 18,583 products listing vitamin C give more (median 100 mg).

Vitamin Das Cholecalciferol, Vitamin D310 mcg (400 IU)50%Vitamin D in Thyroid Support against 14,175 products10 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg10 mcg

57% of 14,175 products listing vitamin D give more (median 15 mcg).

Vitamin B6as Pyridoxine Hydrochloride15 mg882%Vitamin B6 in Thyroid Support against 15,277 products15 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg15 mg

Higher than 68% of 15,277 products listing vitamin B6 (median 6 mg).

Folate680 mcg DFE170%
Folic Acid400 mcg
Iodineas Kelp300 mcg200%Iodine in Thyroid Support against 6,382 products300 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg300 mcg

Higher than 95% of 6,382 products listing iodine (median 150 mcg).

Magnesiumas Magnesium Chelate, Magnesium Oxide100 mg24%Magnesium in Thyroid Support against 14,003 products100 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg100 mg

Higher than 51% of 14,003 products listing magnesium (median 86 mg).

Zincas Zinc Monomethionine10 mg91%Zinc in Thyroid Support 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).

Seleniumas Selenomethionine100 mcg182%Selenium in Thyroid Support 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).

Copperas Copper Gluconate2 mg222%Copper in Thyroid Support against 6,468 products2 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg2 mg

Higher than 66% of 6,468 products listing copper (median 1 mg).

L-Tyrosine500 mgTyrosine in Thyroid Support 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).

Guggul Gum Resin Extractas Commiphora mukul Gum Resin Extract150 mgGuggul in Thyroid Support against 279 products150 mg per serving; the middle half of products list 50 mg to 350 mg, the median 100 mg.150 mg

Higher than 55% of 279 products listing guggul (median 100 mg).

Ashwagandha Root Extractas Withania somnifera Root Extract100 mgAshwagandha in Thyroid Support against 1,646 products100 mg per serving; the middle half of products list 125 mg to 500 mg, the median 250 mg.100 mg

79% of 1,646 products listing ashwagandha give more (median 250 mg).

Bacopa leaf extract100 mgBacopa in Thyroid Support 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).

Green Tea Leaf Extractas Camellia sinensis Leaf Extract60 mgGreen Tea in Thyroid Support against 2,595 products60 mg per serving; the middle half of products list 50 mg to 250 mg, the median 100 mg.60 mg

67% of 2,595 products listing green tea give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 319906 (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:

  • Its 300 mcg of iodine is higher than 95% of the 6,382 iodine products that print an amount; 235 list more.

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?

2 products list 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 Usage: Take 2 capsules daily with food, or as recommended by a healthcare professional.
Warnings
Warnings: Keep out of the reach of children. Pregnant or lactating women, the chronically ill, elderly, individuals under the age of 18, those taking prescription medications (e.g., blood thinners) as well as those with a physician-diagnosed medical condition should consult with a Physician, Pharmacist, Naturopath or other qualified healthcare professional prior to taking dietary supplements.
Pregnant or lactating women, the chronically ill, elderly, individuals under the age of 18, those taking prescription medications (e.g., blood thinners) as well as those with a physician-diagnosed medical condition should consult with a Physician, Pharmacist, Naturopath or other qualified healthcare professional prior to taking dietary supplements.
Sealed for your protection. Do not use if seal is missing or broken.
Not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, or soy. Produced in a third-party, audited and registered cGMP compliant facility that may process other products that contain these allergens or ingredients.
Allergens and what it does not contain
Not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, or soy.
Storage
Best store at controlled room temperature 20 degrees C to 25 degrees C (68 degrees F to 77 degrees to F). Improper storage conditions, such as extended exposure to direct sunlight, high heat & humidity can cause product degradation over time.

Source: label statements in DSLD label 319906.

What else is on the label?

Other ingredients: Modified Cellulose, Rice, Powder.

How many labels does Thyroid Support have?

2 labels are on file under this name since September 22, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 319906 (current) Entered October 24, 2024 · on the market · 60 vegetarian capsules · UPC 8 98220 01744 7
  2. Label 272424 Entered September 22, 2022 · off the market October 12, 2023 · 60 vegetarian capsules · UPC 8 98220 01744 7

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

Who makes it?

The label names Madre Labs, LLC (distributor), Pasadena, CA. All Zoi Research products.

Where next?