三甲氧苄胺嘧啶(下简称 TMP)为一种新型抗菌药物.本身具有一定抗菌活性,抗菌谱与磺胺类相似而效力较强。其本身不是磺胺药物,对其也不主张单独使用。TMP 与磺胺类合用时大大加强了抗菌作用,并可使抑菌作用变为杀菌作用,故有磺胺增效剂之名。TMP 不仅能增效磺胺药的抗菌作用,近年来国内证明:TMP 还能增强多种抗菌素的作用。为了更确切的反应其作用、故又名抗菌增效剂。我国现已正式投产. Trimethoprim (hereinafter referred to as TMP) is a new type of antibacterial drug, which has certain antibacterial activity in itself, and its antimicrobial spectrum is similar to sulfa but has strong potency. It is not a sulfa drug itself, nor is it intended to be used alone. TMP and sulfonamides greatly enhance the antimicrobial effect, and can make the bacteriostatic effect into a bactericidal effect, it is the name of sulfonamide synergist. TMP not only synergistic antimicrobial effect of sulfa drugs, in recent years, domestic proof: TMP can also enhance the role of a variety of antibiotics. In order to more accurately reflect its role, it is also known as antimicrobial synergist. My country is now officially put into operation.