Bacteriostatic Antibiotics: Chloramphenicol, erythromycins, sulfonamides, or tetracyclines may interfere with the bactericidal effect of penicillins.
<Chloramphenicol, effect, penicillins>, <erythromycins, effect, penicillins>, <sulfonamides, effect, penicillins>, <tetracyclines, effect, penicillins>