Osteo-Guard

Osteo-Guard and 4 near-identical products are sold under 4 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Osteo-Guard	Douglas Laboratories
Vitamin K 500 mcg	Source Naturals
Strong Bones Core Complex	Sundown Organics
Vitamin K 100 mcg	GNC
Vitamin K 500 mcg	Source Naturals