Comparison
Flex and Mega Joint 4x
Flex (Performance Lab) lists 5 distinct ingredients and Mega Joint 4x (GreeNatr Premium) 4 (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 0.57.
| Ingredient | Flex | Mega Joint 4x |
|---|---|---|
| Methylsulfonylmethane | 100 mg | 300 mg |
| Glucosamine Sulfate | 0.5 g | 1.5 g |
| Chondroitin (unspecified) | 100 mg | 750 mg |
| Turmeric | 250 mg | |
| Collagen | 0.3 g | |
| Boswellia | 100 mg |
Amounts are per serving as DSLD gives them: Flex, 2 capsules; Mega Joint 4x, 3 capsules. Current labels entered July 2025 and September 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- FlexPerformance Lab: every row against all products listing it
- Mega Joint 4xGreeNatr Premium: every row against all products listing it