Comparison
Fitness Defender and Arginine Citrulline
Fitness Defender (Health Defender A Nutraceutical Company) lists 7 distinct ingredients and Arginine Citrulline (Michael's Naturopathic Programs) 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 0.50.
| Ingredient | Fitness Defender | Arginine Citrulline |
|---|---|---|
| Beet | not disclosed | 600 mg |
| Arginine | not disclosed | 2,250 mg |
| Citrulline | not disclosed | 0.75 g |
| Niacin | 250 mg (1563%) | |
| Folate | 25,000 mcg DFE (6250%) | |
| Riboflavin | 5 mg (385%) | |
| Epimedium | not disclosed |
Amounts are per serving as DSLD gives them: Fitness Defender, 1 capsule; Arginine Citrulline, 3 tablets. Current labels entered August 2025 and March 2018. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Fitness DefenderHealth Defender A Nutraceutical Company: every row against all products listing it
- Arginine CitrullineMichael's Naturopathic Programs: every row against all products listing it