Synonyms of antibiotic

3 Syllables
biologic, pharmacon
4 Syllables
medicine, antitoxins, germicidal, antitoxin, ampicillin, streptomycin, penicillin, antiseptic, medications
5 Syllables
amoxicillin, erythromycin, sulfonamide, tetracycline, antibacterial, bactericidal