Uncommon (at least 1 in 1,000 patients) side effects include: pounding or irregular heart beat, increased body movement, flushing, hot flushes, confusion, blurry vision, dry eyes, nose bleeds, irritated nose, inflammation of the nose, runny nose, inflammation of the sinus, dry throat, stomach pain, stomach flu, nausea, abnormal stool, painful or difficult urination, problems urinating, changes in frequency of urination, itching, chills, decreased sense of smell, abnormal liver function tests, agitation, anxiety, and irritability.