Here's what rhymes with gentamicin.

Consider these alternatives

aminoglycoside / side streptomycin / rising metronidazole / holy chloramphenicol / thiamphenicol vancomycin / rising kanamycin / rising ciprofloxacin / having doxycycline / line tetracycline / line clindamycin / rising neomycin / rising minocycline / line erythromycin / rising aminoglycosides / rights clarithromycin / rising selegiline / seen dantrolene / seen tetracyclines / lines quetiapine / seen antibiotic / logic hypopituitarism / given deacetylase / days atropine / line trimethoprim / him azathioprine / line allopurinol / small sulfatase / case cholinesterase / case octreotide / side azithromycin / rising quinidine / seen chlorpromazine / seen isotretinoin / join piperazine / seen