Glucovance side effects that may occur , include nausea, stomach upset, diarrhea, or weight gain. If Glucovance side effects continue or are bothersome, check with your doctor. CONTACT YOUR DOCTOR IMMEDIATELY if you experience Glucovance side effects like recurring stomach symptoms (after you are taking the same dose for several days or weeks). A later recurrence of stomach symptoms may be due to lactic acidosis. CONTACT YOUR DOCTOR IMMEDIATELY if you experience Glucovance side effects like persistent sore throat or fever, easy bleeding or bruising, severe stomach pain, yellowing eyes or skin, dark urine, unusual tiredness or weakness, unusual or sudden weight gain, mental/mood changes, swelling of the hands or feet, or seizures. GLUCOVANCE MEDICINE CAN CAUSE LOW BLOOD SUGAR (hypoglycemia). Glucovance side effects may occur if you do not consume enough calories (from food, juices, fruit, etc). The symptoms include chills, cold sweat, blurred vision, dizziness, drowsiness, shaking, rapid heartbeat, weakness, headache, fainting, tingling of the hands or feet, or hunger. It is a good habit to carry glucose tablets or gel to treat low blood sugar. If you are in a situation where you don't have these reliable forms of glucose, eat a quick source of sugar such as table sugar, honey, or candy, or drink a glass of orange juice or non-diet soda to quickly raise your blood sugar level. TELL YOUR DOCTOR IMMEDIATELY about the Glucovance side effects. To help prevent hypoglycemia, eat meals on a regular schedule and do not skip meals. Symptoms of high blood sugar (hyperglycemia) include thirst, increased urination, confusion, drowsiness, flushing, rapid breathing, or fruity breath odor. If these symptoms occur, TELL YOUR DOCTOR IMMEDIATELY. Your GLUCOVANCE medicine dosage may need to be increased. Glucovance side effects are unlikely, but seek immediate medical attention if Glucovance side effects occur. Symptoms of Glucovance side effects include rash, itching, swelling, dizziness, or trouble breathing. If you notice other Glucovance side effects not listed above, contact your doctor, nurse, or pharmacist.