Prozac precautions. Before using this medication, tell your doctor or pharmacist your medical history, especially of: personal or family history of bipolar/manic-depressive disorder, personal or family history of suicide attempts, liver problems, diabetes, low sodium in the blood (such as may occur while taking “water pills” – diuretics), severe loss of body water (dehydration), seizures, stomach/intestinal ulcers, personal or family history of glaucoma (angle-closure type).