Amoxicillin is a penicillin antibiotic that has good antibacterial activity against Streptococcus such as Streptococcus pneumoniae and hemolytic Streptococcus, aerobic Gram-positive cocci such as non-penicillinase-producing Staphylococci and Enterococcus faecalis, aerobic Gram-negative bacteria such as Escherichia coli, Proteus mirabilis, Salmonella, Haemophilus influenzae, Neisseria gonorrhoeae, and Helicobacter pylori. Amoxicillin exerts its bactericidal effect by inhibiting the synthesis of bacterial cell walls, which can quickly dissolve and rupture bacteria into spherical bodies.

This product is a broad-spectrum antifungal drug, and its mechanism of action is to inhibit the synthesis of fungal cell membranes and affect their metabolic processes. It has antibacterial effects on a variety of shallow and deep fungi.

Cephalexin is a first-generation cephalosporin with an antibacterial spectrum similar to that of cephalothin, but its antibacterial activity is poorer than that of the latter. Except for Enterococcus and methicillin-resistant Staphylococci, most strains of Streptococcus pneumoniae, hemolytic Streptococcus, and Staphylococcus aureus that produces or does not produce penicillinase are sensitive to this product. This product has a good antibacterial effect on Neisseria, but Haemophilus influenzae is less sensitive to this product; this product has a certain antibacterial effect on some Escherichia coli, Proteus mirabilis, Salmonella and Shigella. The remaining Enterobacteriaceae, Acinetobacter, Pseudomonas aeruginosa, and Bacteroides fragilis are resistant to this product. Fusobacterium and Veillonella are generally sensitive to this product, and anaerobic Gram-positive cocci are moderately sensitive to this product.

This product is a penicillin antibiotic. The antibacterial spectrum is the same as penicillin. It has antibacterial activity against most Gram-positive bacteria, Gram-negative cocci, individual Gram-negative bacilli (such as Haemophilus), spirochetes and actinomycetes, but most Staphylococcus strains (90%) including Staphylococcus aureus and coagulase-negative Staphylococci can produce β-lactamase to hydrolyze this product and inactivate it. The activity of this product against most sensitive strains is 2 to 5 times weaker than that of penicillin. It has no antibacterial effect on strains that produce penicillinase. The mechanism of action of this product is to inhibit the synthesis of bacterial cell walls, causing the bacteria to rupture and dissolve rapidly.