Thyroid Strength
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Iodine101 systematic reviews · 210 randomised trials | 150 mcg |
| Zinc469 systematic reviews · 1315 randomised trials | 8 mg |
| Selenium243 systematic reviews · 573 randomised trials | 70 mcg |
| Copper66 systematic reviews · 294 randomised trials | 0.35 mg |
| L-Tyrosine41 systematic reviews · 516 randomised trials | 300 mg |
| Holy Basil Leaf Extract | 250 mg |
| Sensoril | 250 mg |
| Coleus forskohlii Root Extract | 150 mg |
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose, Brown Rice, Rice Protein, Autolyzed Yeast Extract, Yeast, Hypromellose, Silicon Dioxide, Stearic Acid, Guar Gum
Recommended Use
Suggested Use: 2 tablets daily with a beverage. May be taken anytime throughout the day, even on an empty stomach.
Warnings
If pregnant, nursing, or you have a health condition, consult your healthcare practitioner before taking this product. Keep out of reach of children.
Frequently Asked Questions
What is MegaFood Thyroid Strength's Formulate score?
MegaFood Thyroid Strength scores 85 out of 100 (grade A-) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is MegaFood Thyroid Strength worth it?
MegaFood Thyroid Strength scores 85/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in MegaFood Thyroid Strength?
Each serving contains Iodine (150 mcg), Zinc (8 mg), Selenium (70 mcg), Copper (0.35 mg), and more. Serving size: 2 Tablet(s). 45 servings per container.
How do I take thyroid strength?
Suggested Use: 2 tablets daily with a beverage. May be taken anytime throughout the day, even on an empty stomach.
Who makes Thyroid Strength?
Thyroid Strength is made by MegaFood. See Formulate's full grade and product lineup for MegaFood on its brand page.
Is MegaFood Thyroid Strength third-party tested?
MegaFood lists the following certifications and testing for this product: Certified NSF Gluten-Free Dairy Free Soy Free Tested 125+ Pesticides & Herbicides Glyphosate Residue Free detoxfreeproject.org, Vegetarian, Gluten-Free, Dairy-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.