Comparison

VItamin D-3 (1000 IU) and Vitamin D 1000 IU with Vitamin C

VItamin D-3 (1000 IU) (Sunshine) lists 2 distinct ingredients and Vitamin D 1000 IU with Vitamin C (Sunshine) 2 (rows of one ingredient counted once); 2 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 1.00: the same ingredients, at the amounts in the table below.

Amount per serving (and % of the Daily Value)
IngredientVItamin D-3 (1000 IU)Vitamin D 1000 IU with Vitamin C
Vitamin C100 mg (111%)100 mg (111%)
Vitamin D25 mcg (125%)25 mcg (125%)

Amounts are per serving as DSLD gives them: VItamin D-3 (1000 IU), 1 caplet; Vitamin D 1000 IU with Vitamin C, 1 caplet. Current labels entered February 2017 and December 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own