Mechanisms of Antibacterial Action ß Lactams - Inhibition of bacterial peptidoglycan (cell wall). Examples - Penicillin/cephlosporins: Pen V, amoxicillin, ampicillin, augmentin, ceclor, etc. Macrolides - Inhibition of protein synthesis. Examples - Azithromycin, Clarithromycin, Erythromycin. Tetracyclines - Inhibition of protein synthesis. Examples - Doxycycline, tetracycline HCL, minocycline.