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