Comparison

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

Collagen Types 1 & 3 Powder (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)
IngredientCollagen Types 1 & 3 PowderCollagen Types 1 & 3 1000 mg
Calcium13.2 mg (1%)4.2 mg (under 1%)
Sodium13.2 mg17.1 mg
Collagen6.6 g3 g
Vitamin C30 mg (33%)

Amounts are per serving as DSLD gives them: Collagen Types 1 & 3 Powder, 6.6 g; 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