Read the Patient Information Leaflet if available from your pharmacist before you start taking metformin and each time you get a refill. If you have any questions, consult your doctor or pharmacist.
Take this medication by mouth as directed by your doctor, usually 1-3 times a day with meals. Drink plenty of fluids while taking this medication unless otherwise directed by your doctor.
The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). To reduce your risk of side effects (such as upset stomach), your doctor may direct you to start this medication at a low dose and gradually increase your dose. Follow your doctor's instructions carefully.
Take this medication regularly in order to get the most benefit from it. Remember to use it at the same times each day.
If you are already taking another anti-diabetic drug (such as chlorpropamide), follow your doctor's directions carefully for stopping/continuing the old drug and starting metformin.
Check your blood sugar regularly as directed by your doctor. Keep track of the results, and share them with your doctor. Tell your doctor if your blood sugar measurements are too high or too low. Your dosage/treatment may need to be changed.