Comparison
Zinc Defense and Quercetin 500 mg with Zinc & Copper
Zinc Defense (Pure TheraPro Rx) lists 3 distinct ingredients and Quercetin 500 mg with Zinc & Copper (Natural Factors) 3 (rows of one ingredient counted once); 3 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 1.00: the same ingredients, at the amounts in the table below.
| Ingredient | Zinc Defense | Quercetin 500 mg with Zinc & Copper |
|---|---|---|
| Zinc | 15 mg (136%) | 15 mg (136%) |
| Copper | 1 mg (111%) | 1 mg (111%) |
| Quercetin | 250 mg | 500 mg |
Amounts are per serving as DSLD gives them: Zinc Defense, 1 capsule; Quercetin 500 mg with Zinc & Copper, 1 capsule. Current labels entered February 2024 and January 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Zinc DefensePure TheraPro Rx: every row against all products listing it
- Quercetin 500 mg with Zinc & CopperNatural Factors: every row against all products listing it