Calcium Citrate With Vitamin D

Calcium Citrate With Vitamin D and 8 near-identical products are sold under 6 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Calcium Citrate With Vitamin D	Sunmark
Calcium Citrate With Vitamin D	Sunmark
Os-Cal Extra D3 with Vitamin D3 500 mg Calcium 600 IU Vitamin D3	GlaxoSmithKline
Calcium+D3	Os-Cal
Calcium 500+D	Finest Nutrition
Oyster Shell Calcium 500 mg With Vitamin D	CVS Health
Oyster Shell Calcium 500 mg + D	Reliable-1 Laboratories
Oyster Shell Calcium 500 mg + D	Reliable-1 Laboratories
Calcium + D3	Os-Cal