SN instructed patient / caregiver instructed on medication Ketorolac. SN explained that Ketorolac is a non - opioid anti - inflammatory drug that works to decrease pain by inhibiting prostaglandin synthesis and producing peripherally mediated analgesia. SN explained that the side effects of this medication includes drowsiness, gastrointestinal bleeding, diarrhea, dry mouth and constipation. SN instructed patient / caregiver to notify physician ( MD ) if experiencing persistence of side effects or if rash, itching, weight gain, edema, black stools, headache, or chills fever or muscle pain develops.