Comparison
Extra Strength Hair, Skin & Nails and Hair, Skin & Nails With Antioxidants
Extra Strength Hair, Skin & Nails (21st Century) lists 24 distinct ingredients and Hair, Skin & Nails With Antioxidants (CVS Pharmacy) 24 (rows of one ingredient counted once); 24 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 | Extra Strength Hair, Skin & Nails | Hair, Skin & Nails With Antioxidants |
|---|---|---|
| Vitamin C | 60 mg (67%) | 60 mg (67%) |
| Calcium | 372 mg (29%) | 200 mg (15%) |
| Vitamin B6 | 5 mg (294%) | 5 mg (294%) |
| Vitamin D | 25 mcg (125%) | 25 mcg (125%) |
| Magnesium | 50 mg (12%) | 50 mg (12%) |
| Vitamin B12 | 8 mcg (333%) | 8 mcg (333%) |
| Zinc | 7.5 mg (68%) | 7.5 mg (68%) |
| Niacin | 25 mg (156%) | 25 mg (156%) |
| Vitamin E | 6.75 mg (45%) | 15 IU |
| Folate | 334 mcg DFE (84%) | 200 mcg |
| Vitamin A | 1.5 mg | 5,000 IU |
| Pantothenic Acid (Vitamin B5) | 15 mg (300%) | 15 mg (300%) |
| Riboflavin | 2 mg (154%) | 2 mg (154%) |
| Thiamin | 5 mg (417%) | 5 mg (417%) |
| Biotin | 5,000 mcg (16667%) | 3,000 mcg (10000%) |
| Manganese | 2 mg (87%) | 2 mg (87%) |
| Choline | 10 mg (2%) | 10 mg (2%) |
| Inositol | 30 mg | 30 mg |
| Phosphorus | 180 mg (14%) | 90 mg (7%) |
| Flavonoid | 38 mg | 38 mg |
| PABA | 10 mg | 10 mg |
| Rutin | not disclosed | not disclosed |
| Collagen | 0.05 g | 0.05 g |
| Horsetail | 3 mg | 3 mg |
Amounts are per serving as DSLD gives them: Extra Strength Hair, Skin & Nails, 3 tablets; Hair, Skin & Nails With Antioxidants, 3 tablets. Current labels entered March 2025 and February 2014. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Extra Strength Hair, Skin & Nails21st Century: every row against all products listing it
- Hair, Skin & Nails With AntioxidantsCVS Pharmacy: every row against all products listing it