Comparison

Calcium Complex and Calcium/Mag. Hydroxyapatite Comb.

Calcium Complex (Nikken Wellness Kenzen) lists 7 distinct ingredients and Calcium/Mag. Hydroxyapatite Comb. (New Sun) 8 (rows of one ingredient counted once); 7 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 0.90.

Amount per serving (and % of the Daily Value)
IngredientCalcium ComplexCalcium/Mag. Hydroxyapatite Comb.
Calcium400 mg (31%)1,000 mg (77%)
Vitamin D30 mcg (150%)5 mcg (25%)
Zinc7.5 mg (68%)15 mg (136%)
Manganese2 mg (87%)7 mg (304%)
Copper2 mg (222%)2 mg (222%)
Phosphorus210 mg (17%)500 mg (40%)
Boron1 mg3 mg
Magnesium500 mg (119%)

Amounts are per serving as DSLD gives them: Calcium Complex, 2 tablets; Calcium/Mag. Hydroxyapatite Comb., 4 tablets. Current labels entered November 2022 and August 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own