Comparison
Fast-C and Bio-Quercetin Phytosome and Vitamin C and Bio-Quercetin Phytosome
Fast-C and Bio-Quercetin Phytosome (Life Extension) lists 6 distinct ingredients and Vitamin C and Bio-Quercetin Phytosome (Life Extension) 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 0.52.
| Ingredient | Fast-C and Bio-Quercetin Phytosome | Vitamin C and Bio-Quercetin Phytosome |
|---|---|---|
| Vitamin C | 500 mg (556%) | 1,000 mg (1111%) |
| Quercetin | 15 mg | 15 mg |
| Phosphatidylcholine | not disclosed | not disclosed |
| Calcium | 79 mg (6%) | |
| Magnesium | 8 mg (2%) | |
| Piperine | 3 mg |
Amounts are per serving as DSLD gives them: Fast-C and Bio-Quercetin Phytosome, 1 vegetarian tablet; Vitamin C and Bio-Quercetin Phytosome, 1 vegetarian tablet. Current labels entered August 2020 and June 2025. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Fast-C and Bio-Quercetin PhytosomeLife Extension: every row against all products listing it
- Vitamin C and Bio-Quercetin PhytosomeLife Extension: every row against all products listing it