Thyroid 300®
Non-Nutrient / Non-BotanicalBrand: Priority One Nutritional Supplements
Functions
Net Contents
60 Capsule(s)
Serving Size
1 Capsule(s)
Servings Per Container
Not specified
Supplement Form
Capsule
Bar Code (UPC/SKU)
8 15354 02135 5
Product Version
1013-6242R3
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
Label states: Non-GMO.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Supplement Facts
Serving Size: 1 Capsule(s) · 1 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| Thyroid | 300 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Recommendations: Take one (1) capsule daily, or as directed by your physician.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: May cause reaction with other thyroid medications.
Precautions re: All Other
If heart palpitations, excessive sweating, or hyperthyroidism occur discontinue use. Do not exceed four (4) capsules in a 24 hour period.
Precautions re: Children
Keep out of reach of children.
Storage
Storage
Keep container tightly closed, store in a cool, dry place.
Formulation
Formulation re: Does NOT Contain
Contains no preservatives.
Formulation re: Does NOT Contain
Non-GMO
FDA Statements
FDA Statement of Identity
A Dietary Supplement
FDA Disclaimer Statement
This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
Other Label Statements
General Statements: All Other Content
Bisphenol-A (BPA) & Phthalate Free
Seals/Symbols
GMP Certified
General Statements: All Other Content
Priority One Nutritional Supplements Inc since 1988
General Statements: All Other Content
For professional use only.
Manufacturer & Distributor
Distributor
Priority One Nutritional Supplements, Inc.
Manufacturer
First Priority Manufacturing, Inc.
2681 Delta Ring Road, Ferndale, WA, 98248
Market Reference
Thyroid 300mg
Priority One Vitamins4.7(116)$66.00Thyroid Capsules 300mg Grass-Fed
Priority One Vitamins4.8(45)$116.60Priority One Thyroid Plus 120 Capsules
Priority One Vitamins4.7(28)$111.10Priority One Thyroid Plus 60 Capsules
Priority One Vitamins4.9(24)$60.50Priority One Thyroid 65mg 90 Caps
Priority One Vitamins4.8(132)$40.00Priority One Vitamins Thymus 300mg 90 Capsules - Glandular- Immune System Support*
GoSupps.com4.7(3)$109.99Armour Thyroid 300mg Tablets
HealthWarehouse.com$93.00Pure Encapsulations Thyroid Support Complex 60 Capsules
Farmacopia4.6(121)$37.50
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
RightNutri
4.9 (78)Vitamin & Supplements Shop
26 Queenstown Rd, London SW8 3RX
Nutri Tailor
5.0 (13)Vitamin & Supplements Shop
85 Great Portland St, London W1W 7LT
ITL Health
5.0 (37)Vitamin & Supplements Shop
50 Broadway, London SW1H 0BL
Minerva Wellness
5.0 (21)Vitamin & Supplements Shop
71-75 Shelton St, London WC2H 9JQ
Prodentim
5.0 (1)Vitamin & Supplements Shop
72 Regent St., London W1B 4EN
Protiv Nutrition
5.0 (1)Vitamin & Supplements Shop
3rd Floor, 207 Regent St., London W1B 3HH
Indi Supplements
4.3 (12)Vitamin & Supplements Shop
27 Old Gloucester St, London WC1N 3AF
Arbor Vitamins
5.0 (13)Vitamin & Supplements Shop
128 City Rd, London EC1V 2NX
Research & Studies
Thyroid and Nutrition: Interplay, Clinical Implications, and Public Health Perspectives
S Selim, H Lona, MM Rana… - Bangladesh Journal of …, 2026 - journals.lww.com
… thyroid disorders, dietary and lifestyle strategies for optimizing thyroid function, and priority … Paradoxically, USI success introduces the risk of iodine excess (UIC > 300 µg/L), which can …
2026The effect of multiple nutritional factors on hypothyroidism-a systemic review
I Chaberska, A Feruś, J Lipska, M Turek… - Quality in Sport, 2024 - apcz.umk.pl
… vitamin D supplementation on thyroid hormones, lipid profiles, measures of obesity and serum irisin in women with subclinical hypothyroidism … with supplementation higher than 300 μg I/…
20246 citationsContemporary challenges to iodine status and nutrition: the role of foods, dietary recommendations, fortification and supplementation
M Bouga, MEJ Lean, E Combet - Proceedings of the Nutrition Society, 2018 - cambridge.org
… , we did not find differences in thyroid function in women with … The elimination of ID and related disorders is a priority for the … Daily potassium iodide supplement (300 µg/d) in the first …
201881 citationsNutritional epidemiology and thyroid hormone metabolism
J Vanderpas - Annu. Rev. Nutr., 2006 - annualreviews.org
… increases of thyroid volumes observed by echography alone are a health priority in the … ) consuming 10 mg perchlorate daily (ie, 300 times greater than the potential exposure from …
2006164 citationsBeneficial Impact of Nutritional and Supplemental Changes on the Thyroid Gland Health
Y Danailova, I Sazdova, Z Mitova… - Proceedings of the …, 2024 - proceedings.bas.bg
… , a few hours before or after taking medication; magnesium citrate – 300 mg; the following nutritional supplements were recommended to optimize thyroid function – L-tyrosine – 250 mg; …
2024Thyroid, diet, and alternative approaches
D Larsen, S Singh, M Brito - The Journal of Clinical …, 2022 - academic.oup.com
… Vitamin B12 is also taken by many patients for thyroid health. The recommended daily allowance of vitamin … of vitamin B12 deficiency in patients with autoimmune thyroid disease (AITD) …
202246 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-09-25. DSLD Label ID: 236919. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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