[Pharmacological action] This product belongs to the sulfonamides antibacterial drugs, and has strong inhibitory effect on most gram-positive and negative bacteria.

This product has little absorption in oral administration. It is good for gram-positive bacteria and negative bacteria such as Streptococcus pyogenes, Salmonella and pneumococcus

Antibacterial action. Sulfonamides are structurally similar to p-aminobenzoic acid and can compete with p-aminobenzoic acid for dihydrofolate synthesis in bacteria

Enzyme, hinder the synthesis of dihydrofolate, ultimately affect the synthesis of nucleic acid, inhibit the growth and reproduction of bacteria.