Comparison
Joint Flex and Synoviox
Joint Flex (EHPlabs) lists 10 distinct ingredients and Synoviox (Golden After 50) 6 (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 0.47.
| Ingredient | Joint Flex | Synoviox |
|---|---|---|
| Turmeric | not disclosed | 400 mg |
| Black Pepper | not disclosed | 10 mg |
| Methylsulfonylmethane | 400 mg | 300 mg |
| Hyaluronic acid | 100 mg | 10 mg |
| Boswellia | 200 mg | 300 mg |
| Zinc | 6 mg (55%) | |
| Manganese | 5 mg (217%) | |
| Copper | 1 mg (111%) | |
| Resveratrol | not disclosed | |
| White Willow | 250 mg | |
| Horse Chestnut | not disclosed |
Amounts are per serving as DSLD gives them: Joint Flex, 2 capsules; Synoviox, 2 capsules. Current labels entered January 2021 and August 2025. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Joint FlexEHPlabs: every row against all products listing it
- SynovioxGolden After 50: every row against all products listing it