Calcium 600 mg

Calcium 600 mg and 10 near-identical products are sold under 5 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Calcium 600 mg	Vitamin World
Calcium 600	21st Century
Timed Release Calcium 600 mg + Vitamin D3	Vitamin World
Calcium 600 mg + Vitamin D3	Vitamin World
Calcium 600 mg + Vitamin D3	Vitamin World
Calcium 600 mg + Vitamin D3	Vitamin World
Calcium 600 + Vitamin D3 with Soy Isoflavones	Puritan's Pride
Prime Test	Prime Labs
Calcium 500 mg	GNC Select
Calcium 600 mg	Puritan's Pride
Prime Test	Prime Labs