Comparison
Thyroid Select and Thyroid Synergy
Thyroid Select (Moss Nutrition) lists 10 distinct ingredients and Thyroid Synergy (Designs for Health) 11 (rows of one ingredient counted once); 7 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.48.
| Ingredient | Thyroid Select | Thyroid Synergy |
|---|---|---|
| Zinc | 15 mg (136%) | 25 mg (227%) |
| Vitamin A | 600 mcg RAE (67%) | 2,000 IU |
| Selenium | 50 mcg (91%) | 50 mcg (91%) |
| Manganese | 5 mg (217%) | 5 mg (217%) |
| Iodine | 150 mcg (100%) | 100 mcg (67%) |
| N-Acetyl Tyrosine | 200 mg | 200 mg |
| Coleus | 100 mg | 50 mg |
| Riboflavin | 5 mg (385%) | |
| Chromium | 50 mcg (143%) | |
| Copper | 0.5 mg (56%) | |
| Leucine | 0.2 g | |
| Ashwagandha | 200 mg | |
| Bacopa | 100 mg | |
| American Ginseng | 200 mg |
Amounts are per serving as DSLD gives them: Thyroid Select, 2 capsules; Thyroid Synergy, 2 capsules. Current labels entered September 2025 and September 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Thyroid SelectMoss Nutrition: every row against all products listing it
- Thyroid SynergyDesigns for Health: every row against all products listing it