C 500 mg & E 400 IU

C 500 mg & E 400 IU and 8 near-identical products are sold under 6 different brand names — a exact-twin Formula Twins cluster.

Product	Brand
C 500 mg & E 400 IU	Spring Valley
Vitamin C & D3	Nature's Bounty
C&E With Wild Rose Hips	Vitamin World
C-500 mg	Puritan's Pride
Super C 500 mg	Nutri-Rich
Vitamin C 500 mg	Nature Made
C 500 mg	Nature Made
Vitamin C 500 mg	Nature Made
C 500 mg	Nature Made