This medication description is not meant for treatment prescription without the intervention of a specialist.

Common Uses

Glucophage is an oral antidiabetic medication used to treat type 2 (non-insulin-dependent) diabetes. Diabetes develops when the body proves unable to burn sugar and the unused sugar builds up in the bloodstream. Glucophage lowers the amount of sugar in your blood by decreasing sugar production and absorption and helping your body respond better to its own insulin, which promotes the burning of sugar. It does not, however, increase the body's production of insulin. Glucophage is sometimes prescribed along with insulin or certain other oral antidiabetic drugs such as Micronase or Glucotrol. It is also used alone.

Always remember that Glucophage is an aid to, not a substitute for, good diet and exercise. Failure to follow a sound diet and exercise plan can lead to serious complications such as dangerously high or low blood sugar levels.

How to Take

The usual starting dose is one 500-milligram tablet twice a day, taken with morning and evening meals. Your doctor may increase your daily dose by 500 milligrams at weekly intervals, based on your response up to a total of 2,000 milligrams.

An alternative starting dose is one 850-milligram tablet a day, taken with the morning meal. Your doctor may increase this by 850 milligrams at 14-day intervals, to a maximum of 2,550 milligrams a day.

The usual maintenance dose ranges from 1,500 to 2,550 milligrams daily. If you take more than 2,000 milligrams a day, your doctor may recommend that the medication be divided into three doses, taken with each meal.

Warning and Precautions

Before you start therapy with Glucophage, and at least once a year thereafter, your doctor will do a complete assessment of your kidney function. If you develop kidney problems while on Glucophage, your doctor will discontinue Glucophage. If you are an older person, you will need to have your kidney function monitored more frequently, and your doctor may want to start you at a lower dosage.

You should not take Glucophage for 2 days before and after having an X-ray procedure (such as an angiogram) that uses an injectable dye. Also, if you are going to have surgery, except minor surgery, you should stop taking Glucophage. Once you have resumed normal food and fluid intake, your doctor will tell you when you can start drug therapy again.

Avoid drinking too much alcohol while taking Glucophage. Heavy drinking increases the danger of lactic acidosis and can also trigger an attack of low blood sugar.

Because poor liver function could increase the risk of lactic acidosis, your doctor may decide to check your liver function before prescribing Glucophage and periodically thereafter. If you develop liver problems, your doctor may stop treatment with Glucophage.

If you are taking Glucophage, you should check your blood or urine periodically for abnormal sugar (glucose) levels. Your doctor will do annual blood checks to see if Glucophage is causing a vitamin B12 deficiency or any other blood problem.

Glucophage does not usually cause hypoglycemia (low blood sugar). However, it remains a possibility, especially in older, weak, and undernourished people and those with kidney, liver, adrenal, or pituitary gland problems. The risk of low blood sugar increases when Glucophage is combined with other diabetes medications. The risk is also boosted by missed meals, alcohol, and excessive exercise. To avoid low blood sugar, you should closely follow the diet and exercise plan suggested by your doctor.

If your blood sugar becomes unstable due to the stress of a fever, injury, infection, or surgery, your doctor may temporarily take you off Glucophage and ask you to take insulin instead.

You should stop taking Glucophage if you become seriously dehydrated, since this increases the likelihood of developing lactic acidosis. Tell your doctor if you lose a significant amount of fluid due to vomiting, diarrhea, fever, or some other condition.

The effectiveness of any oral antidiabetic, including Glucophage, may decrease with time. This may occur because of either a diminished responsiveness to the medication or a worsening of the diabetes.

Missed Dose

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

Overdose

Symptoms of Glucophage overdose may include dizziness or lightheadedness; fast or difficult breathing; feeling of being unusually cold; general feeling of being unwell; muscle pain or tenderness; slow or irregular heartbeat; unusual drowsiness; unusual stomach discomfort; unusual weakness or tiredness. Contact your local poison control center or emergency room immediately.

Storage

Store Glucophage at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Glucophage out of the reach of children and away from pets.

Possible Side Effects

Common side effects: diarrhea; gas; headache; indigestion; nausea; stomach upset; temporary metallic taste; vomiting, severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain or discomfort; dizziness or lightheadedness; fast or difficult breathing; feeling of being unusually cold; fever, chills, or persistent sore throat; general feeling of being unwell; muscle pain or weakness; slow or irregular heartbeat; unusual drowsiness; unusual or persistent stomach pain or discomfort; unusual tiredness or weakness. Seek medical attention right away if any side effects occur.

More Information

The information given above is a summary. Your pharmacist can provide more information about Glucophage. Do not share this medicine with others for whom it was not prescribed. Do not use this medicine for other health conditions. If using this medicine for an extended period of time, obtain refills before your supply runs out.