Pharmacodynamics Amoxicillin belongs to -lactam antibiotic, which has broad-spectrum antibacterial action.The antibacterial spectrum and antibacterial activity were basically the same as that of ampicillin, and the antibacterial activity of most gram-positive bacteria was slightly weaker than that of penicillin, and it was sensitive to penicillinase, so it was ineffective to the penicillin-resistant Staphylococcus aureus.It has a strong effect on gram-negative bacteria such as Escherichia coli, Proteus, Salmonella, Haemophilus, Brucella and Pasteurella, but these bacteria are easy to develop drug resistance.It is not sensitive to pseudomonas aeruginosa.Because the absorption of ampicillin is better than that of ampicillin in monogastric animals and the blood concentration is higher, the curative effect on systemic infection is better.It is suitable for infection of respiratory system, urinary system, skin and soft tissue caused by sensitive bacteria.
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