Comparison

Cal/Mag/Zinc Complex and Calcium Magnesium Plus Zinc

Cal/Mag/Zinc Complex (Nature's Life) lists 8 distinct ingredients and Calcium Magnesium Plus Zinc (Bluebonnet) 7 (rows of one ingredient counted once); 6 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 0.57.

Amount per serving (and % of the Daily Value)
IngredientCal/Mag/Zinc ComplexCalcium Magnesium Plus Zinc
Calcium1,000 mg (77%)1,000 mg (77%)
Magnesium500 mg (119%)400 mg (95%)
Zinc15 mg (136%)15 mg (136%)
Copper1 mg (111%)1 mg (111%)
Boron100 mg0.1 mg
Glutamic Acid5 mg100 mg
Vitamin D10 mcg (50%)
Horsetail20 mg
Bamboo30 mg

Amounts are per serving as DSLD gives them: Cal/Mag/Zinc Complex, 4 capsules; Calcium Magnesium Plus Zinc, 3 caplets. Current labels entered June 2016 and June 2018. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own