Coral Calcium Plus Vitamin D3 & Magnesium

Coral Calcium Plus Vitamin D3 & Magnesium and 5 near-identical products are sold under 6 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Coral Calcium Plus Vitamin D3 & Magnesium	Nature's Bounty
Coral Calcium 500 mg + Vitamin D3	Vitamin World
Coral Calcium 1000 mg	Spring Valley
Coral Calcium 500 mg	Puritan's Pride
B Cell Formula	Ecological Formulas
Ester-C 500 mg with Citrus Bioflavonoids	American Health