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Deflazacort tablets


Deflazacort belongs to a class of medicines known as corticosteroids (more commonly called steroids).

Your pharmacist will give you a blue 'Steroid Treatment Card'. Carry this with you at all times.

Take deflazacort with a drink of water at breakfast.

If you need any medical treatment, make sure the person treating you knows you are taking deflazacort. This is because your dose may need to be increased for a short while.

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About deflazacort

Type of medicine

A corticosteroid medicine

Used for

Allergic and inflammatory conditions in adults or children

Also called


Available as


Deflazacort belongs to a group of medicines called corticosteroids. It is sometimes referred to simply as an oral steroid.

Corticosteroids like deflazacort are used to treat a wide variety of conditions. Some examples include autoimmune diseases (for example, systemic lupus erythematosus (SLE), autoimmune hepatitis, sarcoidosis), joint and muscle diseases (for example, rheumatoid arthritis), and allergies and asthma. They are also used in the treatment of some cancers.

Deflazacort works by interfering with the release of certain chemicals in your body which cause inflammation.

Before taking deflazacort

Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking deflazacort it is important that your doctor knows:

  • If you have high blood pressure.

  • If you have had a heart attack, or if you have any other heart problems.

  • If you have any problems with the way your liver works, or if you have any problems with the way your kidneys work.

  • If you (or a close family member) have either diabetes or an eye condition called glaucoma.

  • If you have any of the following conditions: an underactive thyroid gland, 'thinning' of the bones (osteoporosis), epilepsy, a condition causing muscle weakness (called myasthenia gravis), a stomach ulcer, or a bowel disorder.

  • If you have ever had a mental health problem.

  • If you are pregnant or breastfeeding. (Oral steroids like deflazacort can be taken while you are expecting or breastfeeding; however, it is important that your doctor knows about the baby.)

  • If you have any kind of infection at the moment, or if you have ever had tuberculosis (TB).

  • If you have ever had an unwanted blood clot in an artery or a vein.

  • If you have recently had, or are about to have, any vaccinations.

  • If you are taking or using any other medicines. This includes any medicines which are available to buy without a prescription, as well as herbal and complementary medicines.

  • If you have ever had an allergic reaction to a medicine, or if you have ever developed muscle pain after taking a steroid medicine.

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How to take deflazacort

  • Before starting the treatment, read the manufacturer's printed information leaflet from inside the pack and any additional information you are given by your doctor. These will give you more information about deflazacort and will also provide you with a full list of side-effects which you could experience from taking it.

  • Your doctor or pharmacist will tell you how many tablets to take for each dose. For an adult, the dose range is usually from ½-3 tablets daily, although it may be higher than this if you are acutely unwell. Take your dose in the morning during breakfast. Swallow the tablet with a drink of water. Children are sometimes prescribed a dose to take on alternate days only.

  • If you forget to take a dose at your usual time, take it as soon as you remember (with something to eat). If you do not remember until the following day, leave out the missed dose. Do not take two doses together to make up for a forgotten dose.

  • Continue to take deflazacort until your doctor tells you to stop. Stopping taking the tablets suddenly can cause problems so your doctor will want you to reduce your dose gradually over a period of time if/when this becomes necessary.

Getting the most from your treatment

  • If your course of treatment is due to last more than three weeks, you will be given a 'Steroid Treatment Card' which says that you are on steroids and contains some important advice for you. It is important that you read this card and carry it with you at all times. It also contains details about your dose, how long you have been taking deflazacort for, and who prescribed it for you. Please make sure that this information is kept up to date. If you are having an operation or dental treatment or any treatment for an injury, tell the person carrying out the treatment that you are taking deflazacort and show them your treatment card. This is because your dose may need adjusting.

  • Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress. Your doctor will want you to have tests from time to time to make sure you remain free from some of the unwanted side-effects of treatment.

  • Deflazacort can suppress your immune system, so it is important if you become ill that you make an appointment to see your doctor straightaway. Also, if you come into contact with anyone who has measles, shingles or chickenpox (or anyone who suspects they might have them), you must see your doctor as soon as possible.

  • Some vaccines are not suitable for you while you are being treated with deflazacort. If you need any immunisations, make sure you mention that you are taking an oral steroid.

  • If you buy any medicines, check with your pharmacist that they are suitable to take with deflazacort. This is particularly important if you take a medicine for indigestion (such as an antacid), as indigestion remedies should not be taken during the two hours before you take deflazacort, or for two hours afterwards. This is because antacids interfere with the way deflazacort is absorbed by your body, making it less effective.

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Can deflazacort cause problems?

Along with its useful effects, deflazacort can cause unwanted side-effects which your doctor will discuss with you. The benefits of taking an oral steroid usually outweigh the side-effects; however, they can sometimes be troublesome. The table below contains some of the most common ones associated with deflazacort. The best place to find a full list of the side-effects which can be associated with your medicine, is from the manufacturer's printed information leaflet supplied with the medicine. Alternatively, you can find an example of a manufacturer's information leaflet in the reference section below.

Although not everyone experiences side-effects, and some will improve as your body adjusts to the new medicine, speak with your doctor or pharmacist if you become concerned about any of the following:


deflazacort side-effects

What can I do if I experience this?

Tummy (abdominal) pain, indigestion, feeling sick (nausea)

Stick to simple foods. If you are sick (vomit) and there is blood present, you must speak with your doctor straightaway

Muscle weakness or feeling tired

Do not drive and do not use tools or machines while affected

Mood or behavioural changes, especially at the beginning of treatment

If you become confused, or irritable, or start having worrying thoughts about harming yourself, speak with your doctor straightaway

Difficulties sleeping, headache, increased weight, and irregular periods in women

If any of these become troublesome, speak with your doctor

Increased risk of getting an infection

If you become ill, make an appointment to see your doctor straightaway

Long-term treatment with deflazacort may cause other unwanted effects

If you have any symptoms which are causing you concern, you should arrange to see your doctor for advice

Important: you should let your doctor know if you start to experience blurred vision or other vision problems whilst taking deflazacort.

For more information about side-effects which are possible when deflazacort is taken long-term, see the separate leaflet called Oral Steroids.

How to store deflazacort

  • 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

Important information about all medicines

Never take more than the prescribed dose. If you suspect that you or someone else might have taken an overdose of this medicine, go to the accident and emergency department of your local hospital. 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.

Do not 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.

MHRA - Reporting adverse reactions

Report suspected side effects to medicines, vaccines, e-cigarettes, medical device incidents, defective or falsified (fake) products to the Medicines and Healthcare products Regulatory Agency to ensure safe and effective use.

Further reading and references

Article history

The information on this page is written and peer reviewed by qualified clinicians.

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