Comparison
Mega Bio-C Formula and Ultimate C 500
Mega Bio-C Formula (Bluebonnet) lists 5 distinct ingredients and Ultimate C 500 (Highland Laboratories) 5 (rows of one ingredient counted once); 5 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 | Mega Bio-C Formula | Ultimate C 500 |
|---|---|---|
| Vitamin C | 750 mg (833%) | 500 mg (556%) |
| Calcium | 70 mg (5%) | 57 mg (4%) |
| Flavonoid | 750 mg | 100 mg |
| Rutin | 50 mg | 50 mg |
| Hesperidin | 300 mg | 50 mg |
Amounts are per serving as DSLD gives them: Mega Bio-C Formula, 2 capsules; Ultimate C 500, 1 vegetarian capsule. Current labels entered July 2025 and October 2017. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Mega Bio-C FormulaBluebonnet: every row against all products listing it
- Ultimate C 500Highland Laboratories: every row against all products listing it