PlainVitamins

Comparison

Calcium Citrate and Oyster Shell Calcium 500 mg

Calcium Citrate (Puritan's Pride) lists 2 distinct ingredients and Oyster Shell Calcium 500 mg (Sundown Naturals) 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)
IngredientCalcium CitrateOyster Shell Calcium 500 mg
Calcium1,000 mg (77%)500 mg (38%)
Sodium5 mg5 mg

Amounts are per serving as DSLD gives them: Calcium Citrate, 4 capsules; Oyster Shell Calcium 500 mg, 1 caplet. Current labels entered June 2023 and February 2014. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own