Metformin

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Nov 10, 2023

Directions


How should I take metformin?

Take metformin as directed by your physician and/or pharmacist. This prescription drug is to be taken orally (by mouth) with water. It is best to take metformin with meals to reduce digestive side effects. Swallow the tablet whole - do NOT crush, cut, or chew metformin tablets. 

Follow the directions on your prescription label for the correct metformin dosage and frequency. Take your medicine regularly at around the same time every day - this will help you remember to take your medicine. Do not take more metformin or take it more frequently than prescribed. Metformin does not cure diabetes. Continue taking the medicine even if you feel well and your blood sugar is under control. Do not stop metformin without talking to your doctor first. 

Metformin may be given to children 10 years of age and older. The starting dose in children is usually 500 mg by mouth twice a day. If needed, the dose can be increased at weekly intervals, not to exceed 2000 mg by mouth per day. Speak with your pediatrician regarding the appropriate dose for your child and about special care and precautions while using metformin in children.

Missed dose: If you forget to take your dose of metformin, take the medicine as soon as you remember. However, if it is nearly time for your next dose, skip the missed dose and take the next metformin dose at the regular time. Do NOT take a double dose to make up for the missed dose.

Storage: Store metformin at controlled room temperature (between 20°-25° C (68°-77° F); variations in temperature are allowed up to (15°-30° C or 59°-86° F) The drug should be away from moisture, heat, and direct light in a tightly closed container. Keep all non-prescription and prescription drugs, including metformin, out of reach of children.

Unused medicine: Throw away any unused metformin after the expiration date. Learn more about proper medication disposal

NOTEThis sheet is a summary and may not contain all possible information. If you have questions about metformin, talk to your doctor, pharmacist, or health care provider.


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