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Symbicort Turbohaler 100/6 budesonide and formoterol carton, 120 doses

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Symbicort

  • For people already using Symbicort for asthma - repeat supply only
  • A daily asthma inhaler that helps stop symptoms coming on. It holds a steroid and a long-acting medicine that opens your airways
  • The Turbohaler 100/6 and 200/6 can also be your reliever, but only if your prescriber has set it up that way. Otherwise, keep your separate reliever inhaler with you

What it is for

Symbicort Turbohaler is an inhaler for asthma. You use it every day, even when you feel well. That is how it keeps your symptoms from coming back.

It contains two medicines. Budesonide is a steroid that reduces and prevents swelling and inflammation in your lungs. Formoterol relaxes the muscles in your airways, so you can breathe more easily.

Next step: for people already using Symbicort for asthma - repeat supply only. Start our health questions when you order. Your inhaler is only sent once a prescriber has checked your answers.

  • Contact your doctor straight away if your breathing is getting worse or you often wake at night with asthma. Do the same if your chest feels tight in the morning or for longer than usual. Keep using Symbicort. These can mean your asthma is not under control and you need different treatment now.

Which Symbicort Turbohaler do you use?

Symbicort Turbohaler comes in three strengths. Order the one you already use.

TurbohalerDaily inhaler for asthmaCan it be your reliever too?
100/6YesYes, if your prescriber has set it up that way
200/6YesYes, if your prescriber has set it up that way. It can also be used only when you need it, for mild asthma
400/12YesNo - you need a separate reliever

The numbers are the strength. 200/6 means 200 micrograms of budesonide and 6 micrograms of formoterol in each dose.

The Turbohaler 100/6 is licensed from age 6, and the 200/6 and 400/12 from age 12.

Is it right for you?

Do not use Symbicort if you:

  • are allergic to budesonide or formoterol
  • are allergic to any of the other ingredients - that is lactose, which contains small amounts of milk protein

Talk to our prescriber before you use it if you:

  • have diabetes
  • have a lung infection, or have had tuberculosis (TB)
  • have high blood pressure, or have ever had a heart problem - such as an uneven heartbeat, a very fast pulse, narrowed arteries or heart failure
  • have thyroid or adrenal gland problems
  • have low potassium in your blood
  • have severe liver problems
  • are pregnant, planning a pregnancy or breastfeeding
  • are going to have a general anaesthetic, for an operation or dental work

Lactose is a type of sugar. The small amount in the Turbohaler does not normally cause problems if you are lactose intolerant. But if a doctor has told you that you cannot digest some sugars, check with our prescriber first.

How it works

Budesonide is a corticosteroid, a type of steroid. It calms the swelling and inflammation inside your airways, which is what keeps symptoms coming back.

Formoterol is a long-acting bronchodilator, a medicine that opens up your airways. It starts to work within 1 to 3 minutes, and one dose lasts at least 12 hours. That quick start is why the 100/6 and 200/6 can be used as a reliever. Whether yours is depends on what your prescriber has set up.

How to use it

There are three ways Symbicort can be prescribed for asthma. Your pharmacist's label tells you which one is yours. Do not switch between them on your own.

1. Every day, with a separate reliever inhaler. You take a fixed dose of Symbicort each day. When you get symptoms, you use your other reliever inhaler, not Symbicort. Keep that reliever with you at all times.

2. Every day, and also as your reliever (maintenance and reliever therapy, sometimes called MART). Symbicort is your only asthma inhaler. You take a daily dose, and you also take extra inhalations when you get symptoms. Turbohaler 100/6 and 200/6 only. Never 400/12.

3. Only when you need it, for mild asthma (reliever-only use). You take Symbicort when you get symptoms, and have no daily dose. Turbohaler 200/6 only.

The doses below are the adult doses.

Turbohaler 100/6

If you use it every day, with a separate reliever:

  • 1 or 2 inhalations twice a day. Your doctor may raise this to 4 inhalations twice a day.

If you use it every day and as your reliever (MART):

  • 2 inhalations a day. Take 1 in the morning and 1 in the evening, or 2 in the morning, or 2 in the evening.
  • When you get symptoms, take 1 inhalation and wait a few minutes. Still not better? Take another.
  • Take no more than 6 inhalations at any one time.
  • Never more than 12 inhalations in 24 hours.
  • If you are regularly using 8 or more a day, see your doctor or nurse soon. Your treatment may need to change.
  • Do not use this strength just before exercise to stop symptoms coming on. If you get symptoms while you exercise, use it as above.

Turbohaler 200/6

If you use it every day, with a separate reliever:

  • 1 or 2 inhalations twice a day. Your doctor may raise this to 4 inhalations twice a day.

If you use it every day and as your reliever (MART):

  • 2 inhalations a day: 1 in the morning and 1 in the evening, or 2 in the morning, or 2 in the evening. Your doctor may raise this to 2 inhalations twice a day.
  • When you get symptoms, take 1 inhalation and wait a few minutes. Still not better? Take another.

If you use it only when you need it, for mild asthma (reliever-only use):

  • You have no daily dose. When you get symptoms, take 1 inhalation and wait a few minutes. Still not better? Take another.

Limits for both reliever uses:

  • No more than 6 inhalations at any one time.
  • More than 8 inhalations a day is not normally needed. Your doctor may allow up to 12 a day for a short time.
  • Never more than 12 inhalations in 24 hours.
  • If you regularly need 8 or more a day, book to see your doctor or nurse.
  • If your doctor agrees, you can also use it to prevent symptoms, for example before exercise or when you will be near something you are allergic to.

Turbohaler 400/12

This strength is a daily inhaler only. Always use a separate reliever when you get symptoms. Never use the 400/12 as your reliever.

  • 1 inhalation twice a day. Your doctor may raise this to 2 inhalations twice a day.

If your asthma is well controlled, your doctor may cut your daily dose to once a day. Do not change or stop your dose without talking to your doctor or asthma nurse first.

  • If Symbicort does not relieve your asthma symptoms, or they get worse even though you are using it, get medical advice urgently. Always keep the inhaler you use as your reliever with you.

Using the Turbohaler

Before you use a new Turbohaler for the first time:

  1. Unscrew the cover and lift it off. You may hear a rattle.
  2. Hold it upright, red grip at the bottom.
  3. Turn the red grip as far as it goes one way, then as far as it goes back. You should hear a click.
  4. Do this a second time. It is now ready.

Each time you take a dose:

  1. Unscrew the cover and lift it off.
  2. Hold the Turbohaler upright, red grip at the bottom. Do not hold the mouthpiece.
  3. Load a dose: turn the grip fully one way, then fully back, until it clicks. Only load it when you are about to use it.
  4. Hold it away from your mouth and breathe out gently. Never breathe out into the Turbohaler.
  5. Put the mouthpiece between your teeth and close your lips. Breathe in as deeply and as hard as you can. Do not bite the mouthpiece.
  6. Take it out of your mouth and breathe out gently.
  7. For a second inhalation, repeat steps 2 to 6.
  8. Screw the cover back on tightly.
  9. After your morning or evening daily dose, rinse your mouth with water and spit it out.

The dose is very small, so you may not taste anything. If you followed the steps, you have taken it.

The window on the side counts down your doses. When you first see a red mark at its edge, about 20 doses are left. When the "0" on a red background reaches the middle of the window, start a new inhaler. The grip still clicks when it is empty, and the rattle you hear is a drying agent, not the medicine.

If you load it twice by mistake, you still only get one dose. Wipe the outside of the mouthpiece once a week with a dry tissue. Never use water on it.

If you forget a dose or take too much

Forgot a dose? Take it as soon as you remember. If your next dose is nearly due, skip the missed one. Never take a double dose.

Taken too much? You may get trembling, a headache or a fast heartbeat. Contact your doctor or pharmacist for advice.

Stopping, and steroid tablets

Do not stop using Symbicort suddenly. Talk to your doctor first - if you stop, your symptoms may come back or get worse.

If you take steroid tablets, your doctor may lower them. While they come down you may feel generally unwell, even as your chest gets better. You might get a stuffy or runny nose, weakness, joint or muscle pain, or a rash (eczema). Contact your doctor straight away if these bother you, or if you get a headache, tiredness, feeling sick or being sick.

During a time of stress, such as a chest infection or before an operation, your doctor may add steroid tablets for a while.

Other medicines

Tell our prescriber about every medicine you use, including eye drops and anything you buy without a prescription. Tell them especially if you take:

  • Beta-blockers, such as atenolol or propranolol for blood pressure, or timolol eye drops for glaucoma. They can weaken the effect of formoterol.
  • Some medicines for HIV or infections, such as ritonavir, ketoconazole, itraconazole, voriconazole, posaconazole, clarithromycin or telithromycin. They can raise the amount of budesonide in your body. If you take one of these, using Symbicort as your reliever as well is not recommended.
  • Heart medicines, such as quinidine for a fast or uneven heartbeat, or digoxin for heart failure.
  • Water tablets (diuretics), such as furosemide.
  • Steroid tablets, such as prednisolone.
  • Theophylline or aminophylline, and other airway-opening medicines such as salbutamol.
  • Some antidepressants, such as amitriptyline or nefazodone, and MAOIs.
  • Phenothiazines, such as chlorpromazine or prochlorperazine.
  • Levodopa for Parkinson's disease, or levothyroxine for your thyroid.

Pregnancy and breastfeeding

If you are pregnant or planning to get pregnant, talk to your doctor before you use Symbicort. Only use it if your doctor tells you to. If you get pregnant while using it, do not stop - talk to your doctor straight away. If you are breastfeeding, talk to your doctor first.

Driving

Symbicort has no or very little effect on your ability to drive or use machines.

What it will not do

  • The Turbohaler 400/12 is not a reliever. Do not use it to treat symptoms that come on suddenly.
  • It does not replace your asthma reviews. Your doctor or nurse will keep checking your dose, aiming for the lowest one that controls your symptoms.
  • We do not start you on Symbicort. If you have not used it before, talk to your GP or asthma nurse.

Looking for a reliever inhaler, or a steroid-only preventer? See our asthma range.

Most side effects are mild. Trembling and a pounding heartbeat are the most common, and they usually fade within a few days.

  • Stop using Symbicort and talk to your doctor at once if you get signs of an allergic reaction. Do the same if you get sudden wheezing or shortness of breath straight after using your inhaler.
  • Look out for:
    • swelling of your face, mouth, tongue or throat, trouble swallowing, or hives with trouble breathing, or you suddenly feel faint. This may be an allergic reaction (rare, may affect up to 1 in 1,000 people)
    • sudden wheezing or shortness of breath straight after using your inhaler. Use your reliever inhaler at once (very rare, may affect up to 1 in 10,000 people)

Common - may affect up to 1 in 10 people:

  • a pounding heartbeat you can feel (palpitations), trembling or shaking - usually mild, and usually gone as you keep using it
  • thrush (a fungal infection) in your mouth - rinsing your mouth with water after your daily doses makes this less likely
  • a mild sore throat, coughing or a hoarse voice
  • headache
  • pneumonia (a lung infection) in people with COPD

Uncommon - may affect up to 1 in 100 people:

  • feeling restless, nervous or agitated
  • disturbed sleep
  • feeling dizzy
  • feeling sick (nausea)
  • a fast heartbeat
  • bruising
  • muscle cramps
  • blurred vision

Rare - may affect up to 1 in 1,000 people:

  • rash or itching
  • sudden tightening of the airways that makes you wheeze (bronchospasm). If this comes on just after a dose, stop using Symbicort and talk to your doctor at once
  • low potassium in your blood
  • an uneven heartbeat

Very rare - may affect up to 1 in 10,000 people:

  • depression
  • changes in behaviour, mostly in children
  • chest pain or tightness (angina)
  • more sugar (glucose) in your blood
  • taste changes, such as a bad taste in your mouth
  • changes in your blood pressure

Inhaled steroids can affect the steroid hormones your body makes, mostly at high doses over a long time. This can mean thinner bones, or cloudy patches in the lens of the eye (cataract). It can also mean raised pressure in the eye (glaucoma), slower growth in children and teenagers, or an effect on the adrenal glands. These are much less likely with an inhaler than with steroid tablets.

Contact your doctor if your vision goes blurred or changes in any other way.

You can report any side effect to the MHRA through the Yellow Card scheme. Or search for MHRA Yellow Card in the Google Play or Apple App Store.

Can I start Symbicort with you?

No. We only supply Symbicort to people who are already using it. If you have not used it before, talk to your GP or asthma nurse about starting it.

Can Symbicort be my only asthma inhaler?

It can, with the Turbohaler 100/6 or 200/6, if your prescriber has set it up that way. Then you use it every day and also when you get symptoms. With the Turbohaler 400/12 you always need a separate reliever.

What is the most I can take in a day?

It depends on how it is prescribed. Used as a reliever (Turbohaler 100/6 or 200/6), never more than 12 inhalations in 24 hours, and no more than 6 at a time. If you only use it as a daily inhaler, stick to your prescribed dose.

I feel fine. Do I still need to use it?

Yes. If you have a daily dose, use it every day, even when you have no symptoms. That is what keeps them away.

Why do I need to rinse my mouth?

To lower your chance of thrush in your mouth. Rinse with water and spit it out after your morning and evening doses.

I cannot taste anything from my Turbohaler. Did it work?

Probably. The dose is very small, so you may not taste it. If you loaded it until it clicked and breathed in hard and deep, you have taken it.

I am allergic to milk. Can I use Symbicort?

No. The Turbohaler powder contains lactose, which has small amounts of milk protein and can cause an allergic reaction. Tell our prescriber about any allergy.

How should I store it?

The Turbohaler needs no special storage. Keep it out of the sight and reach of children, and do not use it after the expiry date.

Ingredients

Active ingredients: budesonide and formoterol fumarate dihydrate.

TurbohalerIn each dose measured by the inhalerIn each dose that leaves the mouthpieceOther ingredients
100/6budesonide 100 micrograms, formoterol 6 microgramsbudesonide 80 micrograms, formoterol 4.5 microgramslactose monohydrate (contains milk proteins) - 810 micrograms per dose
200/6budesonide 200 micrograms, formoterol 6 microgramsbudesonide 160 micrograms, formoterol 4.5 microgramslactose monohydrate (contains milk proteins) - 730 micrograms per dose
400/12budesonide 400 micrograms, formoterol 12 microgramsbudesonide 320 micrograms, formoterol 9 microgramslactose monohydrate (contains milk proteins) - 491 micrograms per dose

What it looks like

A white inhaler with a red turning grip and a dose window. The 100/6 holds 60 or 120 doses, the 200/6 holds 30, 60 or 120, and the 400/12 holds 60.

Storage

  • Keep it out of the sight and reach of children.
  • No special storage conditions.
  • Do not use it after the expiry date.
  • Do not throw medicines away in wastewater or household rubbish. Ask your pharmacist how to get rid of any you no longer need.

Leaflet

Each strength has its own leaflet, and they differ. Read the one in your pack before your first dose - it is the one that applies to your inhaler.

Related

  • Fostair - another inhaler that combines a steroid with a long-acting bronchodilator
  • Ventolin - a reliever inhaler
  • Clenil Modulite - a steroid preventer inhaler
  • Asthma - our full range

Sources

The facts on this page come from these documents, all from AstraZeneca UK Limited:

The leaflet inside your pack is the one that applies to your inhaler. Last checked against these sources: 14 October 2026.

Umar Razzaq, MPharm | University of Strathclyde, Clinical Pharmacist.
Content Written by:Umar RazzaqMPharm | GPhC Reg: 2064448 | University Of Strathclyde
Date Written:12/06/2026
Role:Clinical Pharmacist
Nish Fayyaz, MPharm | University of Strathclyde, Pharmacist.
Medically Reviewed By:Nish FayyazMPharm | GPhC Reg: 2225257 | University Of Strathclyde
Date Checked:12/06/2026
Role:Pharmacist
Fully inspected and regulated service
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Approved UK-licensed treatments
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