побочная реакция(Alexander Demidov); нежелательная побочная реакция(In medicine, an adverse effect is an undesired harmful effect resulting from a medication or other intervention such as surgery. An adverse effect may be termed a "side effect", when judged to be secondary to a main or therapeutic effect. WK. Usually adverse (side effect: negative effect that may be caused due to use of medicine. BED. The patient suffered severe side effects from the drug. OCD), but not always: The drug has the beneficial side effect of lowering the patient's blood pressure. OCD Alexander Demidov); побочный результат; издержки(of grafleonov); побочное действие(лекарства, лечения и т. п.)
