Neomycin Sulfate, USP is a broad-spectrum aminoglycoside antibiotic composed of related compounds including Neomycin A (neamine), Neomycin B (framycetin), Neomycin C, and a few minor compounds. Neomycin B is the most active fraction, followed by C and A. The quantities of these components vary from lot to lot.
Neomycin Sulfate, USP conforms to United States Pharmacopoeia specifications.