21st Century Calcium 1000mg Plus D3 Tablets, Bone Health, 90 Count

Supplement facts

Ingredient	Amount per serving	% daily value
Vitamin D3	20 mcg	100%
Calcium	1000 mg	77%

Directions: As a calcium supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider.

Label data from the Dietary Supplement Label Database.

Label data as of 6 Sep 2026

84 / 100Very good

This is a practical once-daily calcium supplement with a meaningful vitamin D3 cofactor, although the calcium form is not disclosed.

Scoring criteria

Quantity
100 / 100
One tablet supplies 1,000 mg calcium plus 20 mcg vitamin D3, a reasonable general adult supplemental maintenance amount for the stated bone-health role.
Form
65 / 100
The calcium salt is not disclosed, so its absorption and tolerability properties cannot be resolved from this label.
Convenience
100 / 100
The label directs adults to take one tablet daily, and the container provides 90 tablets.
Label accuracy
100 / 100
The matched Supplement Facts panel gives internally consistent serving, nutrient, and container amounts.
Purity
75 / 100
The product has an ordinary disclosed excipient list but provides no named independent purity certification or product-specific testing evidence.
Cofactors
75 / 100
The declared 20 mcg vitamin D3 has an established complementary role in calcium and bone metabolism at a meaningful amount.