Comparison
Peak Thyroid Support and Thyrocsin Thyroid Cofactors
Peak Thyroid Support (Peak Pure & Natural) lists 6 distinct ingredients and Thyrocsin Thyroid Cofactors (Thorne Research) 9 (rows of one ingredient counted once); 6 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 0.75.
| Ingredient | Peak Thyroid Support | Thyrocsin Thyroid Cofactors |
|---|---|---|
| Zinc | 10 mg (91%) | 5 mg (45%) |
| Selenium | 100 mcg (182%) | 100 mcg (182%) |
| Copper | 1 mg (111%) | 0.5 mg (56%) |
| Iodine | 500 mcg (333%) | 225 mcg (150%) |
| Ashwagandha | 200 mg | 90 mg |
| Tyrosine | 500 mg | 500 mg |
| Vitamin C | 200 mg (222%) | |
| Vitamin B12 | 100 mcg (4167%) | |
| Vitamin E | 100 IU |
Amounts are per serving as DSLD gives them: Peak Thyroid Support, 2 capsules; Thyrocsin Thyroid Cofactors, 2 capsules. Current labels entered May 2025 and August 2016. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Peak Thyroid SupportPeak Pure & Natural: every row against all products listing it
- Thyrocsin Thyroid CofactorsThorne Research: every row against all products listing it