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Metformin

Glucophage, Diabetmin, Diaformin, Diamet


Uses


What is Metformin for?

Metformin controls diabetes by helping your body to use insulin better. It also decreases the amount of sugar made by your liver, therefore reducing your sugar levels in the blood.

How should I take or use Metformin?

Take with or after food. This lowers the chance of getting stomach discomfort, nausea and diarrhea.

What should I do if I forget to take or use Metformin?

If you miss a dose, take the missed dose as soon as you remember. Remember to take it with food. If it is almost time for your next dose, take only the usual dose. Do not double your dose or use extra medication to make up for the missed dose.


Precaution


What precautions should I take when taking or using Metformin?

Inform your doctor if 

  • you are allergic to this medication or any of the other ingredients of this medication
  • you are pregnant, planning to become pregnant, or breastfeeding
  • you have a heart condition, kidney or liver problem
  • you drink alcohol often
  • you are going for a scan/ X-ray. You may need to stop taking metformin for a couple of days

If you need to do fasting blood tests, do not take your medication until your blood has been taken and you have eaten.

What food or medication should I avoid when I take or use Metformin?

Avoid taking alcohol when you are on medication as it increases the risk of lactic acid buildup in your body..


Side Effects


What are some common side effects of Metformin?

It may cause stomach discomfort, nausea, vomiting, diarrhea, loss of appetite and metallic taste in your mouth. These symptoms should get better over time. Check with your doctor if any of these symptoms are serious or do not go away. Taking metformin after food or with food may help to reduce some of these symptoms.

Lactic acidosis (a buildup of lactic acid in the body) is a very rare but serious medical problem. The chance of this happening increases if your kidneys are not working properly. 
Symptoms of lactic acidosis include 

  • decreased appetite
  • vomiting and stomach pains that continues for some time
  • a general feeling of  being unwell accompanied with feeling cold or excessive tiredness
  • fast, shallow breathing.

If any of these happens, stop taking your medication and see a doctor immediately as you will need treatment straight away.


Handling


How should I store Metformin?

  • Keep away from children
  • Keep in a cool, dry place, away from direct sunlight

How do I throw away Metformin safely?

Pack this medicine into a black trash bag and seal it tightly before throwing into the rubbish chute or bin.

Disclaimers

Please take note that the above is not a complete list of all possible side effects. If you have any concerns about your medication or if you have other side effects that you think are caused by this medication, please consult your doctor or pharmacist.

If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.

This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (National Healthcare Group, National University Health System, and SingHealth), community pharmacies (Guardian, Unity, and Watsons), and the Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.

Last Updated on May 2019



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