Acid-resistant and penicillinase-resistant penicillins have good antibacterial activity against penicillinase-producing Staphylococci and exert their bactericidal effects by inhibiting bacterial cell wall synthesis.

Ticarcillin is a broad-spectrum bactericidal agent of the penicillin class. It has a broad-spectrum bactericidal effect when combined with clavulanic acid. It is suitable for the empirical treatment of a wide range of bacterial infectious diseases.

Clavulanic acid is an irreversible and highly effective β-lactamase inhibitor. It has little antibacterial effect alone, but it can restore the sensitivity of ticarcillin by blocking β-lactamase, making this product an antibiotic with broad-spectrum bactericidal effect.

It is a penicillin antibiotic. When combined with sulbactam sodium, it not only protects it from enzymatic hydrolysis, but also expands the antibacterial spectrum. It has good antibacterial activity against enzyme-producing strains of Staphylococcus aureus, Acinetobacter spp. and Bacteroides fragilis.

It is a semi-synthetic β-lactamase inhibitor, which has strong antibacterial activity against Neisseria gonorrhoeae, Neisseria meningitidis and Acinetobacter calcoaceticus, and has strong irreversible competitive inhibition against β-lactamase produced by Staphylococcus aureus and most Gram-negative bacteria. When combined with ampicillin sodium, it expands the antibacterial spectrum.

It achieves bactericidal effect by inhibiting biosynthesis of sensitive bacterial cell walls. When used in combination with sulbactam, it has obvious synergistic effect.

It has an irreversible inhibitory effect on most important β-lactamases produced by β-lactam antibiotic-resistant strains, and can protect β-lactam antibiotics from hydrolysis and destruction by β-lactamases of resistant bacteria. When used in combination with cefoperazone, it has a significant synergistic effect and can enhance the sensitivity of sensitive strains to compound preparations.