Comparison

Best Collagen Types 1 & 3 and Collagen Types 1 & 3 1000 mg

Best Collagen Types 1 & 3 (Doctor's Best) lists 3 distinct ingredients and Collagen Types 1 & 3 1000 mg (Doctor's Best) 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 0.82.

Amount per serving (and % of the Daily Value)
IngredientBest Collagen Types 1 & 3Collagen Types 1 & 3 1000 mg
Vitamin C30 mg (33%)30 mg (33%)
Sodium10 mg17.1 mg
Collagen3 g3 g
Calcium4.2 mg (under 1%)

Amounts are per serving as DSLD gives them: Best Collagen Types 1 & 3, 3 tablets; Collagen Types 1 & 3 1000 mg, 3 tablets. Current labels entered May 2016 and May 2016. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own