Comparison

G.C. Flex and Glucosamine 750 Chondroitin 600

G.C. Flex (Purity Products) lists 4 distinct ingredients and Glucosamine 750 Chondroitin 600 (GNC) 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 0.71.

Amount per serving (and % of the Daily Value)
IngredientG.C. FlexGlucosamine 750 Chondroitin 600
Sodium84 mg60 mg
Chondroitin Sulfate1,200 mg600 mg
Glucosamine Hydrochloride1.5 g0.75 g
Boswellia100 mg

Amounts are per serving as DSLD gives them: G.C. Flex, 3 capsules; Glucosamine 750 Chondroitin 600, 1 caplet. Current labels entered January 2021 and October 2011. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own