氨苄青霉素(下称氨苄青)为一广谱半合成青霉素。早于1961年已用于临床。对革兰氏阴性菌和阳性菌都有抗菌作用,尤其是对大肠杆菌、痢疾杆菌、流感杆菌、沙门氏菌、志贺氏菌和一些变形杆菌有较强的抗菌作用。毒性低,孕妇、婴儿可用。口服吸收良好。肌内注射时疼痛更甚于链霉素,故临床以静脉滴注为 Ampicillin (hereinafter referred to ampicillin) is a broad spectrum of semi-synthetic penicillin. As early as 1961 has been used in clinical. Gram-negative bacteria and positive bacteria have antibacterial effects, especially for Escherichia coli, Shigella, Influenza, Salmonella, Shigella and some Proteus have a strong antibacterial effect. Low toxicity, pregnant women, infants available. Oral absorption is good. Intramuscular injection of pain even more than streptomycin, it is clinically intravenous infusion