Kelp

Kelp and 27 near-identical products are sold under 20 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Kelp	GNC Natural Brand
Super Kelp	Vitabase
Super Kelp	Vitabase
Sea Kelp	Puritan's Pride
Kelp	Martin Avenue Pharmacy
Icelandic Kelp	Nature's Life
Sea Kelp 150 mcg	Vitamin World
Kelp	NOW
Kelp	GNC SuperFoods
Kelp	Swanson
Kelp	Swanson
Iodine from Kelp	Whole Foods Market
Sea Kelp 150 mcg	tnvitamins
Atlantic Kelp	Viva Vitamins
Kelp	Douglas Cooper Co.
Icelandic Kelp	NaturesPlus
Iodine Tablets (from Sea Kelp) 150 mcg	Foster Regal
Iodine from Sea Kelp 150 mcg	Wonder Laboratories
Iodine from Sea Kelp 150 mcg	Wonder Laboratories
Kelp	DC
Iodine 325 mcg	Nutricost
Kelp 325 mcg	Nutricost
Kelp (Iodine) 150 mcg	Nature's Blend
Super Kelp	Vitamin Discount Center
Icelandic Kelp	NaturesPlus
Iodine from Kelp 150 mcg	Wonder Laboratories
Icelandic Kelp	NaturesPlus
Kelp	Swanson