antibiotic ## need to know what are the side effect of this drug if t he person that is treated has cancer in blood get kimo & radiation. ## the drug i s vosyn what are the side effects if a person is on kimo & radiation. ## Where you referring to Zosyn? It is an antibiotic that contains the active ingredients, Piperacillin and Tazobactam. The FDA lists its typical side effects as possibly including watery diarrhea, trouble concentrating, easy bruising, and weakness. Can you please post back and clarify?