What is it?

How is it Used?

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Metformin Overview


(met FOR min)

Created: 2005-04-07 16:58:12.0

Modified: 2010-03-09 08:22:11.0

Lexi-PALS TM © (1977)-(2007) Lexi-Comp, Inc. All rights reserved.

Canadian Brand Names

Apo-Metformin®; CO Metformin; Dom-Metformin; Glucophage®; Glumetza™; Glycon; Med-Metformin; Mylan-Metformin; Novo-Metformin; Nu-Metformin; PHL-Metformin; PMS-Metformin; PRO-Metformin; RAN™-Metformin; ratio-Metformin; Riva-Metformin; Sandoz-Metformin FC; ZYM-Metformin

General statements

• If you have a life-threatening allergy, wear allergy identification at all times.

• Do not share your medicine with others and do not take anyone else's medicine.

• Keep all medicine out of the reach of children and pets.

• Most medicines can be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.

• Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).

• Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or in Canada to Health Canada's Canada Vigilance Program at 1-866-234-2345.

• Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.

How does it work?

• Metformin reduces sugar production and helps insulin work better.

How is it best taken?

• This medicine can be used alone or in combination with other diabetes medicine.

• Take this medicine with or without food. Take with food if it causes an upset stomach.

• Take long-acting products at dinner.

• Long-acting products: Swallow whole. Do not chew, break, or crush.

• Fortamet®: Take this medicine with a full glass of water.

• Follow diet plan and exercise program as recommended by healthcare provider.

How should I store this medicine?

• Store at room temperature.

• Protect from moisture. Do not store in a bathroom or kitchen.

Mexican Brand Names

Dabex; Dimefor; Glucophage

Pharmacologic Category

Antidiabetic Agent, Biguanide

Reasons not to take this medicine

• Do not give this medicine to a child younger than 10 years of age.

• Do not give the extended release form to a child younger than 17 years of age.

• If you have an allergy to metformin or any other part of this medicine.

• Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.

• If you have any of the following conditions: Acidic blood condition, dehydration, drink alcohol to excess, kidney disease, or liver disease.

• If you are having an x-ray with dye.

U.S. Brand Names

Fortamet®; Glucophage®; Glucophage® XR; Glumetza™; Riomet®

What do I do if I miss a dose? (does not apply to patients in the hospital)

• Take a missed dose as soon as possible.

• If it is almost time for the next dose, skip the missed dose and return to your regular schedule.

• Do not take a double dose or extra doses.

• Do not change dose or stop medicine. Talk with healthcare provider.

What key warnings should I know about before taking this medicine?

• A small number of people may develop an acidity to their blood. Metformin can cause this. It may occur in people whose liver or kidneys do not work normally.

What should I monitor?

• Change in condition being treated. Is it better, worse, or about the same?

• Check blood sugar as directed by healthcare provider.

• Check blood work (kidney and liver function). Talk with healthcare provider.

• Check weight weekly. Report a weight loss to healthcare provider.

• Have a yearly eye exam and visit to the foot doctor.