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Pioglitazone

  • You will need to have regular blood tests to check your blood sugar and liver function.
  • If you get any of the following symptoms, contact your doctor immediately - feeling or being sick for no apparent reason, tummy pain, tiredness, loss of appetite, dark urine.
  • If you notice any changes in your vision, get this checked by your doctor or optician as soon as possible.

About pioglitazone

Type of medicineAntidiabetic
Used forDiabetes mellitus (type 2)
Also calledActos®
Competact® (a combination of pioglitazone and metformin)
Available asTablets

Pioglitazone works by helping your body make better use of the insulin it produces.

Insulin is made naturally in the pancreas. It regulates the amount of sugar in the blood. If the body does not make enough insulin to meet its needs or does not properly use the insulin it makes, this results in the condition called diabetes mellitus (sugar diabetes).

Pioglitazone is used on its own or alongside metformin and/or another antidiabetic medicine to treat Type 2 (non-insulin dependent) diabetes mellitus. It can also be used with insulin.

Before taking pioglitazone

Before taking pioglitazone make sure your doctor or pharmacist knows:

  • If you are pregnant, trying for a baby or breast-feeding.
  • If you have liver problems.
  • If you have heart failure (a condition where the pumping action of the heart is reduced) or other heart problems.
  • If you have a diabetic eye disease called macular oedema (swelling of the back of the eye).
  • If you have polycystic ovary syndrome (a hormonal condition causing cysts in the ovaries).
  • If you have noticed blood in your urine, or if you have ever had bladder cancer.
  • If you are taking other medicines, including those available to buy without a prescription, herbal or complementary medicines.
  • If you have ever had an allergic reaction to this or any other medicine.

How to take pioglitazone

  • Before beginning treatment, read the manufacturer's printed information leaflet.
  • Take your medication exactly as directed by your doctor. Pioglitazone is usually taken once daily.
  • If you are taking the combination tablet Competact®, take your dose with or after food.
  • Try to take pioglitazone at the same time each day to avoid missing any doses.
  • If you forget to take a dose, take one as soon as you remember and then continue taking it at the usual time. If it is nearly time for your next dose, leave out the missed dose. Do not take two doses at the same time to make up. If in doubt, speak to your pharmacist or doctor.

Getting the most from your treatment

  • It is important that you follow any dietary instructions that you have been given by your doctor or diabetes nurse.
  • If you are having any treatment like an operation or dental treatment, tell the person carrying out the treatment that you are taking pioglitazone.
  • Keep your regular doctor's or diabetic clinic's appointment so your progress can be monitored. You will need to have occasional blood tests to monitor your liver function.
  • Test your blood or urine regularly to ensure your blood sugar levels are being controlled. This is especially important if you are taking pioglitazone with another antidiabetic medicine or insulin.
  • Check your weight regularly. If it increases, let your doctor know.
  • Avoid drinking large amounts of alcohol or drinking alcohol on an empty stomach. Pioglitazone and alcohol may produce low blood sugar and affects the control of your condition.
  • Do not stop taking this medicine without speaking to your doctor first.
  • If you buy any medicines, check with a pharmacist that they are safe to take with pioglitazone.

Can pioglitazone cause problems?

Along with their useful effects all medicines can cause unwanted side effects which usually improve as your body adjusts to the new medicine. Speak with your doctor or pharmacist if any of the following side effects continue or become troublesome.

Common pioglitazone side-effects - these affect less than 1 in 10 people who take this medicineWhat can I do if I experience this
Feeling or being sickEat little and often and stick to simple foods. If this continues, let your doctor know
Difficulty seeingLet your doctor know about this
Increase in appetite, weight gainTry to maintain a balanced diet. If you feel you are gaining weight without actually eating more, discuss this with your doctor
Ankle swellingKeep your legs raised while at rest
HeadacheAsk your pharmacist to recommend a suitable pain-killer
DizzinessMake sure your reactions are normal before driving or doing other jobs which could be dangerous if you were not fully alert
Muscle pain, respiratory infections, changes in sexual function, loss of feeling of touch, wind, bone painIf any of these are troublesome, speak with your doctor

Important: If you experience any of the following, speak with your doctor or go to your local accident and emergency department:

  • Jaundice (yellowing of the skin or whites of the eyes).
  • Feeling or being sick for no apparent reason, tummy pain, tiredness, and dark urine.
  • Blood in your urine, or bladder problems such as pain while urinating or an urgency to urinate.

If you experience any other symptoms which you think may be due to this medicine, speak with your doctor or pharmacist.

How to store pioglitazone

  • Keep all medicines out of the reach and sight of children.
  • Store in a cool, dry place, away from direct heat and light.

Important information about all medicines


  • Never take more than the prescribed dose. If you suspect that you or someone else has taken an overdose of this medicine, go to the accident and emergency department of your local hospital at once. Take the container with you, even if it is empty.
  • This medicine is for you. Never give it to other people even if their condition appears to be the same as yours.
  • Never keep out of date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you.
  • If you have any questions about this medicine ask your pharmacist.

References

  • Manufacturer's PIL, Actos®, Takeda UK Ltd, electronic Medicines Compendium. Dated February 2009, accessed April 2009.
  • Manufacturer's PIL, Competact® tablets, Takeda UK Ltd, electronic Medicines Compendium. Dated February 2009, accessed April 2009.
  • British National Formulary; 57th Edition (March 2009) British Medical Association and Royal Pharmaceutical Society of Great Britain, London
The pharmacists and clinicians responsible for the production of this document are:
Original Author: Helen Allen
Last Checked: 12 May 2009
Current Version: Helen Allen
Document ID: 3760  Version: 24
Peer Reviewer: Dr Adrian Bonsall
© EMIS 2011
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