L-Arginine

L-Arginine and 22 near-identical products are sold under 19 different brand names — a exact-twin Formula Twins cluster.

Product	Brand
L-Arginine	GNC Mega Men
L-Arginine 500 mg	Protocol For Life Balance
L-Arginine 500 mg	Nature's Bounty
L-Arginine 500 mg	Vitamin World
L-Arginine 500 mg	Sundown Naturalist
L-Arginine 1000 mg	Hard Rhino
L-Arginine 500 mg	Spring Valley
L-Arginine 500 mg	H-E-B
L-Arginine	Dr. Mercola
L-Arginine	New Sun
L-Arginine 500 mg	Sundown
L-Arginine	New Sun
L-Arginine	Herbadiet
L-Arginine 500 mg	Douglas Cooper Co.
L-Arginine	Herbadiet
L-Arginine Base 1000 mg	BulkSupplements.com
L-Arginine Base 1000 mg	BulkSupplements.com
L-Arginine 1000 mg Capsules	BulkSupplements.com
Arginine & Ornithine 500 mg / 250 mg	NOW Sports
L-Arginine L-Ornithine 1,500 mg	AN Amazing Nutrition Amazing Formulas
Beet Root + L-Arginine 2000 mg	Bronson
Beet Root + L-Arginine	Futurebiotics
L-Arginine	Thorne