Medication Information Leaflet


What is this medication for?

It is used to control diabetes. It reduces blood sugar by removing excess sugar from the body through the urine. 

How should I take/use this medication?

It is taken once a day. You may take this medication with or without food.

What should I do if I forget to take/use this medication?

If you forget to take a dose, take it as soon as you remember. Then take your next dose at the usual time. 

If it is less than 12 hours until your next dose, skip the missed dose and take your next dose at the usual time. Do not take two doses to make up for the missed dose.

What precautions should I take?

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 have suffered from diabetic ketoacidosis (presence of ketones in blood or urine) in the past
  • you have a history of urinary tract infections or bladder cancer
  • you are planned to go for any surgery or procedure as you may need to stop the medication temporarily before that

What are some side-effects that I need to seek medical advice immediately?

1) Diabetic ketoacidosis (DKA) - increase in ketones in your blood or urine
DKA is a rare but serious side effect associated with this medication. You should stop taking your medication and check with your doctor immediately if you experience these symptoms:
  • Pain in the stomach , abdominal area
  • Nausea or vomiting 
  • Feeling confused, tired or unusually sleepy 
  • Difficulty breathing (shortness of breath)
  • Feeling very thirsty
  • Sweet fruity smell in your breath
To lower the chances of DKA, make sure to drink enough water everyday. Extended periods of fasting or large reductions in food intake may also increase the chances of DKA happening.

2) Genital infections
This medication is also very rarely associated with a serious bacterial infection in the genital region. You should stop the medication and see a doctor immediately if you develop fever and pain, redness or swelling in your genitals or in the area between your genitals and rectum. To minimise the chances of this happening, always maintain good genital hygiene.

3) If you experience any ulcers or signs of infections on your feet (e.g. pain or tenderness, redness, swollen appearance, feeling of warmth), please stop the medication and see a doctor.

What are some other side-effects of this medication?

If you have any of the symptoms below, you should check with your doctor. 

1) Yeast infections
Some female patients may have a higher chance of getting vaginal yeast infections. Symptoms include white or yellowish vaginal discharge, bad smelling discharge or itch at the vaginal area. 

Some male patients may have a higher chance of getting yeast infection of the penis. Symptoms include rash, redness, itch or swelling of the penis, bad smelling discharge from the penis or pain around the penis. 

If you find redness, swelling of or around the genital area, have a fever and are generally feeling unwell, please stop the medication and see a doctor.

2) Urinary tract infection
This medication may increase the chance of getting a urinary tract infection. Symptoms include a burning feeling when you pass urine, the need to pass urine more often, feeling like you need to pass urine more often,or if you see blood in your urine. 

3) Low blood pressure
You may feel giddy or lightheaded, especially when you get up from a lying or sitting position. This is more likely to happen in the morning or when you first get out of bed. Getting up slowly may help but if the problem continues, check with your doctor. 

4) Dehydration (not having enough water in the body)
You might experience dehydration as it removes the excess sugar in your body through your urine. You should take extra 1-2 glasses of water every day unless your doctor told you that you need to control the amount of liquid you take. 

5) Low blood sugar
Symptoms of low blood sugar are weakness, dizziness, hunger, sweating, trembling, blurred vision, unsteady walk or fast heartbeat.

If you experience any of these low blood sugar symptoms, do the following immediately: 

Step 1: Check your blood sugar level with a home blood sugar meter (glucometer) if available. If your blood sugar level is less than 4 mmol/L, take 15 grams of sugar such as:
  • 3 glucose tablets or 
  • Half a glass of fruit juice or 
  • 3 teaspoons of sugar, honey or syrup 
Step 2:  You should feel better in about 15 minutes. If you have a home blood sugar meter, you should check your blood sugar level again. 

Step 3: If your blood sugar level is still less than 4 mmol/L or you still have symptoms of low blood sugar, you should take another 15 grams of sugar.

If your symptoms still do not get better, see a doctor or go to the hospital immediately.

What food or medication should I avoid when I take this medication?

Avoid taking alcohol with this medication.

How should I store this medication?

Store in a cool and dry place, away from direct sunlight. Keep this medication away from children.

How should I dispose of this medication safely?

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

Additional information

You are encouraged to check your blood sugar levels with a home blood sugar meter as instructed by your healthcare professional.


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 Pharmaceutical Society of Singapore.

Last updated on May 2019


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