Fortamet; Glucophage; Glucophage XR; Glumetza; Riomet
ACT-Metformin; Apo-Metformin; Auro-Metformin; Dom-Metformin; ECL-Metformin; Glucophage; Glumetza; Glycon; JAMP-Metformin; JAMP-Metformin Blackberry; Mar-Metformin; Metformin FC; Mint-Metformin; Mylan-Metformin; PHL-Metformin; PMS-Metformin; PRO-Metformin; RAN-Metformin; ratio-Metformin; Riva-Metformin; Sandoz-Metformin FC; Septa-Metformin; Teva-Metformin
- Rarely, metformin may cause an acid health problem in the blood (lactic acidosis). The risk of lactic acidosis is higher in people with kidney problems and in people who take certain other drugs like topiramate. The risk is also higher in people with liver problems or heart failure, in older people (65 or older), or with alcohol use. If lactic acidosis happens, it can lead to other health problems and can be deadly. Lab tests to check the kidneys may be done while taking this drug. Talk with the doctor.
- Call your doctor right away if you have signs of too much lactic acid in the blood (lactic acidosis) like fast breathing, fast heartbeat, a heartbeat that does not feel normal, very bad upset stomach or throwing up, feeling very sleepy, shortness of breath, feeling very tired or weak, very bad dizziness, feeling cold, or muscle pain or cramps.
- Do not take this drug if you are 80 years of age or older and have not had your kidneys tested.
- Do not take this drug if you have a very bad infection, low oxygen, or a lot of fluid loss.
- If you have liver disease, talk with your doctor.
- Talk with your doctor before you drink alcohol.
- If you are having an exam or test with dye or have had one within the past 48 hours, talk with your doctor.
- Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
- It is used to lower blood sugar in patients with high blood sugar (diabetes).
- If you have an allergy to metformin or any other part of this drug.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have any of these health problems: Acidic blood problem, kidney disease, or liver disease.
- If you have had a recent heart attack or stroke.
- Do not drive if your blood sugar has been low. There is a greater chance of you having a crash.
- Check your blood sugar as you have been told by your doctor.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- It may be harder to control your blood sugar during times of stress like when you have a fever, an infection, an injury, or surgery. A change in level of physical activity or exercise and a change in diet may also affect your blood sugar. Talk with your doctor.
- Be careful in hot weather or while being active. Drink lots of fluids to stop fluid loss.
- If you have been taking this drug for a long time or at high doses, it may not work as well and you may need higher doses to get the same effect. This is known as tolerance. Call your doctor if this drug stops working well. Do not take more than ordered.
- If you are 65 or older, use this drug with care. You could have more side effects.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
- You may see the tablet shell in your stool.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Low blood sugar may occur. Signs may be dizziness, headache, feeling sleepy, feeling weak, shaking, a fast heartbeat, confusion, hunger, or sweating. Call the doctor right away if any of these signs occur. Follow what you have been told to do if low blood sugar occurs. This may include taking glucose tablets, liquid glucose, or some fruit juices.
- Very bad belly pain.
- It is common to have stomach problems like upset stomach, throwing up, or loose stools (diarrhea) when you start taking this drug. If you have stomach problems later during care, call your doctor right away. This may be a sign of an acid health problem in the blood (lactic acidosis).
- Loose stools (diarrhea).
- Upset stomach or throwing up.
- Feeling tired or weak.
- This drug may be used alone or with other high blood sugar (diabetes) drugs.
- Keep taking this drug as you have been told by your doctor or other health care provider, even if you feel well.
- To gain the most benefit, do not miss doses.
- Follow the diet and workout plan that your doctor told you about.
- Take this drug at dinner.
- Swallow whole. Do not chew, break, or crush.
All other products:
- Take with meals.
- Measure liquid doses carefully. Use the measuring device that comes with this drug. If there is none, ask the pharmacist for a device to measure this drug.
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Check with your pharmacist about how to throw out unused drugs.
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.