Natto-Serra

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

Product	Brand
Natto-Serra	Doctor's Best
Calcium D-Glucarate 500 mg	NusaPure
Coral Calcium 1000 mg	NusaPure
Ginkgo Biloba Extract 120 mg	Swanson
High Absorption Calcium D-Glucarate 500 mg	Zazzee Naturals