Thyroid Support
by Priority One Nutritional Supplements · capsule · 60 vegetarian capsules
- On the market (NIH)
- UPC 8 15354 02141 6
- DSLD label 277419
- Serving 2 vegetarian capsules
- 30 servings
Thyroid Support by Priority One Nutritional Supplements lists 12 ingredients, 10 with an amount per serving of 2 vegetarian capsules, such as 30 mg of thiamine hydrochloride, 50 mg of riboflavin, 450 mcg of iodine and 40 mg of magnesium; 2 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on December 13, 2022.
What is in Thyroid Support?
Each row as the label prints it, per serving of 2 vegetarian 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 |
|---|---|---|---|
| Thiamine Hydrochlorideas Vitamin B1 | 30 mg | 2,463% | Higher than 78% of 9,830 products listing thiamin (median 5 mg). |
| Riboflavinas Riboflavin 5 Sodium Phosphate | 50 mg | 3,846% | Higher than 86% of 9,824 products listing riboflavin (median 4 mg). |
| Blend50/50 | 52 mg NE | 325% | |
| Niacin | in the blend, no amount given | ||
| Niacinamide | in the blend, no amount given | ||
| Iodineas Potassium Iodide | 450 mcg | 300% | Higher than 97% of 6,382 products listing iodine (median 150 mcg). |
| Magnesiumas Magnesium Aspartate, Magnesium Oxide | 40 mg | 10% | 70% of 14,003 products listing magnesium give more (median 86 mg). |
| Zincas Zinc Chloride, Zinc Picolinate | 10 mg | 91% | 51% of 13,186 products listing zinc give more (median 11 mg). |
| Manganeseas Manganese Carbonate, Manganese Citrate | 2 mg | 87% | 38% of 7,016 products listing manganese give more (median 2 mg). |
| Potassiumas Potassium Aspartate, Potassium Carbonate, Potassium Chloride | 40 mg | 1% | 79% of 11,614 products listing potassium give more (median 99 mg). |
| Guggulas Gugglesterone | 250 mg | Higher than 67% of 279 products listing guggul (median 100 mg). | |
| L-Tyrosine | 250 mg | 64% of 1,680 products listing tyrosine give more (median 500 mg). | |
| L-Aspartic Acid | 200 mg | 67% of 377 products listing aspartic acid give more (median 337 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 277419 (entered December 13, 2022), 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 450 mcg of iodine is higher than 97% of the 6,382 iodine products that print an amount; 189 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?
The products whose ingredient lists overlap most with Thyroid Support's, rare ingredients counting for more.
- Biochem Thyro-Max SupportCountry Life · off the market 10 shared, 84% alike
- Thyro-GenDC 10 shared, 84% alike
- Thyro-Max SupportCountry Life 10 shared, 84% alike
- Thyro-DineWonder Laboratories 10 shared, 80% alike
- Thyroid PlusPriority One Nutritional Supplements 9 shared, 62% alike
- Thyroid ComplexBotanic Choice 8 shared, 42% 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
- Recommendations: Take two (2) capsules daily or as directed by a physician.
- Warnings
- Warning: Contains niacin, may cause "niacin flush" a temporary redness and tingling of the skin.
- If you are pregnant or breast feeding, consult your physician before using this product.
- Keep out of reach of children.
- For professional use only.
- Allergens and what it does not contain
- Contains no preservatives.
- Non-GMO
- Storage
- Keep container tightly closed, store in a cool, dry place.
Source: label statements in DSLD label 277419.
What else is on the label?
Other ingredients: Rice Flour, Silicon Dioxide, Vegetarian Capsule.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Certified.
How many labels does Thyroid Support have?
2 labels are on file under this name since September 24, 2021: other sizes, label designs and reformulations. The current one leads this page.
- Label 277419 (current) Entered December 13, 2022 · on the market · 60 vegetarian capsules · UPC 8 15354 02141 6
- Label 255630 Entered September 24, 2021 · off the market March 16, 2022 · 60 vegetarian capsules · UPC 8 15354 02141 6
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Priority One Nutritional Supplements, Inc. (distributor). All Priority One Nutritional Supplements products.