Foracort 400 is a high-strength prescription combination inhaler containing Budesonide 400mcg and Formoterol 6mcg. This medicine is prescribed to treat and prevent both severe asthma and chronic obstructive pulmonary disease (COPD) in adult patients. The reference UK brand Symbicort may be better known to some patients. This is completely normal as they contain the same active ingredient. Because of the clinical complexity of severe respiratory conditions, use of this medicine is permitted only under the active supervision of a registered doctor.
If you have been prescribed a high-strength combination inhaler, you may notice several brand names available. Foracort 400 is one option your respiratory specialist or GP may discuss with you.
Severe or poorly controlled asthma affects a significant number of adults. Adequate symptom control in many patients can only be achieved through higher doses of inhaled corticosteroids, which is why Foracort 400 has been formulated at this strength. Foracort 400 is specifically formulated for patients whose condition requires stronger anti-inflammatory coverage.
Each dose of Foracort 400 is formulated with two active constituents: Budesonide 400mcg and Formoterol 6mcg. It belongs to the combined inhaled corticosteroid and long-acting bronchodilator (ICS/LABA) class.
This guide is written to help UK patients understand how Foracort 400 works, what it treats, and how to use it correctly and safely.
What Is Foracort 400?
Foracort 400 is a high-strength prescription-only combination inhaler. It contains two medicines that work together to control and prevent chronic respiratory symptoms.
Budesonide 400 mcg is an inhaled corticosteroid (a steroid medicine that reduces inflammation in the airways). Formoterol 6mcg is a long-acting beta2-agonist (LABA), a bronchodilator that relaxes the muscles surrounding the airways.
Medicine Detail Information
| PARAMETER | DETAILS |
|---|---|
| Drug Class | Inhaled corticosteroid + Long-acting beta2-agonist (ICS/LABA) |
| Active Ingredients | Budesonide 400mcg + Formoterol 6mcg |
| Prescription Status | Prescription-only medicine (POM) |
| Therapeutic Use | Severe asthma and COPD management |
| UK Reference Brand | Symbicort |
| Form | Pressurised metered-dose inhaler |
Foracort 400 is a preventer and controller inhaler, not a reliever, and must therefore be used regularly as prescribed rather than only during acute attacks.
The higher Budesonide dose (400mcg) distinguishes Foracort 400 from lower-strength formulations such as Foracort 100. Where lower doses have failed to deliver sufficient symptom control, this higher-strength formulation is prescribed by doctors.
How Budesonide and Formoterol Work in the Body
Foracort 400 works through two distinct but complementary mechanisms. Both the underlying inflammatory process and the physical constriction of the airways are simultaneously addressed by this combination inhaler.
How Budesonide 400mcg works
As an inhaled corticosteroid (ICS), Budesonide acts locally within the airways to reduce swelling and chronic inflammation. It reduces inflammation (swelling and irritation) deep inside the airways. At the 400mcg dose, it provides stronger anti-inflammatory coverage than lower-strength formulations. Patients with moderate to severe asthma or COPD are the most appropriate candidates for this formulation, given the higher corticosteroid strength it provides.
Because airway inflammation is reduced by Budesonide, reactivity to common triggers — including allergens, cold air, and exercise — is significantly diminished. When used consistently over time, both the frequency and severity of respiratory attacks and flare-ups are progressively reduced.
How Formoterol 6mcg works
Acting as a long-acting beta2-agonist (LABA), Formoterol provides sustained bronchodilation by targeting smooth muscle in the airways. Beta2-receptors on airway smooth muscle are targeted by Formoterol, producing a bronchodilatory effect through receptor binding. Muscular relaxation of the airway walls results from this binding action, allowing the airways to widen and resistance to airflow to decrease. Because airway resistance is reduced, breathing becomes noticeably easier for the patient.
Together, these dual actions control both the inflammatory cause and the physical narrowing of the airways. Clinical evidence reviewed by the MHRA supports that this combination is more effective than either medicine used alone for chronic respiratory conditions.
When Doctors Prescribe Foracort 400
Foracort 400 is prescribed for adult patients with more severe or poorly controlled chronic respiratory conditions. A doctor will assess lung function, symptom frequency, and previous treatment response before prescribing this higher-strength inhaler.
Conditions it is used for:
Severe or Poorly Controlled Asthma
Foracort 400 is prescribed when lower-strength inhalers have not adequately controlled asthma symptoms. Wheezing, breathlessness, chest tightness, and persistent cough are all managed and prevented through the long-term use of this medicine. Because consistent use is maintained, the frequency and severity of asthma attacks are significantly reduced over time.
Moderate to Severe COPD
COPD is a progressive, long-term lung condition causing worsening breathing difficulties over time. Foracort 400 helps reduce the number and severity of COPD exacerbations (sudden worsening episodes). It supports improved day-to-day lung function in patients with more advanced disease.
Step-Up Therapy
When a patient has been using a lower-strength ICS/LABA inhaler without adequate symptom control, doctors may step up treatment. Foracort 400 may be prescribed as part of a step-up strategy in accordance with NICE asthma management guidelines.
Benefits of Foracort 400
Stronger anti-inflammatory control
The higher Budesonide dose in Foracort 400 provides a greater anti-inflammatory effect than lower-strength formulations. Patients experiencing frequent or severe respiratory symptoms stand to gain the greatest clinical benefit from this formulation. Improved inflammation control leads to fewer attacks and better lung function over time.
Dual-action symptom management
Foracort 400 simultaneously addresses both airway inflammation and muscle tightness. Budesonide reduces the underlying inflammation whilst Formoterol keeps the airways relaxed and open. Immediate symptom relief and sustained long-term control of respiratory disease are both delivered through this dual-action combination approach.
Reduced exacerbations and hospital admissions
Regular use of Foracort 400 has been shown to reduce COPD exacerbations and asthma attacks. Fewer acute episodes mean fewer emergency GP visits and hospital admissions. Because exacerbations and admissions are reduced, a significant improvement in quality of life is achieved alongside reduced demand on NHS resources.
Localised delivery with reduced systemic side effects
Because inhaled medicines are delivered directly to the lungs, systemic exposure is minimised compared with oral treatments, reducing the risk of whole-body side effects. This reduces the amount absorbed into the rest of the body compared to oral steroid medicines. As a result, the risk of systemic (whole-body) side effects is significantly lower, even at higher inhaled doses.
Alternative Medicine Doctors May Consider
A GP or respiratory specialist may assess the severity of the condition alongside the patient’s clinical profile before recommending an alternative combination inhaler.
- Symbicort Turbohaler 400/12 — the UK reference brand containing Budesonide 400mcg and Formoterol 12mcg; a widely prescribed higher-strength alternative
- Seretide 500 Accuhaler (Fluticasone 500mcg/Salmeterol 50mcg) — an alternative high-strength ICS/LABA for severe asthma
- Fostair 200/6 (Beclometasone/Formoterol) — a smaller-particle ICS/LABA that may be considered for some patients
- Trimbow (Beclometasone/Formoterol/Glycopyrronium) — a triple-combination inhaler for severe COPD
- Trelegy Ellipta (Fluticasone/Vilanterol/Umeclidinium) — a once-daily triple therapy option for eligible COPD patients
Your doctor will select the most appropriate inhaler based on your condition severity, inhaler technique, and personal clinical assessment.
See available respiratory inhaler treatment options by discussing your symptoms with your GP or a registered UK pharmacist.
Possible Side Effects
Like any medicine, Foracort 400 has the potential to produce side effects in some individuals. At higher doses, some side effects may occur more frequently. Because correct inhaler technique reduces the amount of medicine deposited in the mouth and throat, many side effects can be minimised or avoided entirely.
| COMMON SIDE EFFECTS | RARE BUT SERIOUS SIDE EFFECTS |
|---|---|
| Hoarse voice or voice changes | Severe allergic reaction (anaphylaxis) — skin rash, swelling of the face or throat, difficulty breathing |
| Oral thrush — a fungal infection of the mouth and throat, among the most commonly reported side effects with inhaled corticosteroids | Paradoxical bronchospasm — a sudden worsening of breathing immediately following inhalation — must be reported to a doctor without delay |
| Headache | Significant palpitations or an irregular heartbeat — must be brought to the attention of a doctor promptly |
| Throat irritation or cough after inhalation | Adrenal suppression — with prolonged high-dose use, more relevant at 400mcg |
| Mild nausea | Reduced bone density with very long-term high-dose use |
| Palpitations (awareness of heartbeat) — associated with the Formoterol component |
Reducing the Risk of Oral Thrush
After every dose, the mouth must be rinsed thoroughly with water to remove residual medicine from the oral cavity. The water must be spat out rather than swallowed, as swallowing it may increase systemic absorption of the medicine. Because a spacer device reduces the deposition of medicine in the mouth and throat, its use may further lower the risk of oral thrush.
Any serious side effect must prompt immediate discontinuation of the inhaler, with urgent medical attention obtained without delay. Where symptoms are severe or life-threatening, 999 must be called without delay.
Suspected side effects can be reported directly through the MHRA Yellow Card Scheme, which is accessible at yellowcard.mhra.gov.uk.
Important Safety Advice
Drug interactions
Certain medicines are known to interact with Foracort 400, meaning a full review of all current treatments is essential before this inhaler is started. Because beta-blockers can reduce the effectiveness of Formoterol, their concurrent use must be reviewed carefully by a doctor. Some antifungal medicines, such as ketoconazole and certain HIV medicines, can increase the amount of Budesonide in the body.
All medicines currently being taken must always be disclosed to both your doctor and pharmacist at every consultation. Herbal supplements and over-the-counter products must be disclosed alongside prescription medicines, as interactions can arise from any of these sources.
Medical conditions to disclose
Tell your doctor before using Foracort 400 if you have any of the following:
- Heart disease or irregular heartbeat
- High blood pressure
- Diabetes — inhaled corticosteroids can affect blood glucose levels
- Thyroid problems
- Osteoporosis (weakened bones) — higher-dose ICS use may affect bone density over time
- A history of tuberculosis (TB)
- Glaucoma or cataracts
- Adrenal gland problems
Pregnancy and breastfeeding
Before using Foracort 400 during pregnancy or whilst planning a pregnancy, a discussion with your doctor is essential. Uncontrolled asthma during pregnancy carries greater risks than appropriately managed inhaler therapy. The benefits and risks of continued treatment during pregnancy will be carefully assessed by your doctor based on your individual clinical circumstances.
Where breastfeeding is ongoing, medical advice must be sought before continuing or commencing use of Foracort 400.
Alcohol
There is no direct clinical interaction between Foracort 400 and alcohol. However, alcohol may worsen respiratory symptoms in some patients. Alcohol consumption during treatment should be kept to a minimum, and any concerns must be discussed with your doctor before any decision is made.
Dependence
Physical dependence is not produced by Foracort 400, meaning the body does not become chemically reliant on the medicine. However, stopping it suddenly without medical advice can cause rapid worsening of asthma or COPD symptoms. Because stopping this inhaler suddenly can cause respiratory symptoms to worsen rapidly, your doctor must always be consulted before treatment is discontinued.
Long-term steroid monitoring
Long-term use of higher-dose inhaled corticosteroids requires regular medical review. Your doctor may monitor bone density, eye pressure, and adrenal function during extended treatment. Always attend scheduled review appointments, as these allow your doctor to monitor for any long-term effects of higher-dose inhaled corticosteroid therapy.
When Should You Speak to a Doctor?
Where any of the following symptoms arise during treatment, your GP or respiratory specialist must be contacted without delay.
- Your breathing symptoms are not improving despite regular use of Foracort 400
- You are needing your reliever inhaler more frequently than usual
- Contact your GP if you notice white patches in the mouth or throat, as these may indicate oral thrush requiring prompt treatment
- Your voice becomes persistently hoarse or changes significantly
- Palpitations, chest pain, or an irregular heartbeat experienced during treatment must be reported to your GP without delay
- You notice any swelling, skin rash, or difficulty breathing after inhalation
- You experience unexpected weight gain, fatigue, or mood changes, which may indicate effects on the adrenal glands and must be reported to your doctor without delay
Call 999 immediately or go to your nearest A&E if you experience a sudden, severe worsening of breathing. This may indicate a serious asthma attack or bronchospasm requiring urgent treatment.
Can Foracort 400 Be Used With Other Medicines?
Foracort 400 can interact with a number of medicines. Beta-blockers and medicines that affect liver enzyme activity represent the most clinically significant interaction risks associated with Foracort 400.
A complete and up-to-date list of all medicines currently being taken must always be provided to your GP and pharmacist at every consultation. This includes inhalers, tablets, liquids, and supplements. Never adjust your Foracort 400 dose or stop using it without first seeking advice from your doctor or pharmacist.
How to Use Foracort 400 Correctly
Correct inhaler technique is essential for Foracort 400 to work effectively. At higher doses, poor technique can mean less medicine reaching the lungs and more depositing in the throat, increasing the risk of side effects.
Step-by-step inhaler technique:
- Shake the inhaler well before each use
- Exhale completely — breathe out fully before placing the mouthpiece in your mouth
- Seal your lips firmly around the mouthpiece
- Press and inhale — press the canister down whilst breathing in slowly and deeply through your mouth
- Hold your breath for 5 to 10 seconds to allow the medicine to reach deep into the lungs
- Rinse your mouth with water after every dose and spit, do not swallow
Consider using a spacer device. Spacers significantly improve medicine delivery and reduce throat deposition at higher doses. Ask your pharmacist or GP for guidance on the correct spacer for your inhaler.
The number of puffs and the frequency of use prescribed by your doctor must be followed carefully at all times. Exceeding the prescribed dose carries clinical risks and must not be done under any circumstances.
Storage and Handling Advice
Foracort 400 must be stored at room temperature and must not be kept in conditions where the temperature exceeds 25°C. Direct sunlight, heat, and frost must all be avoided when storing the inhaler, as these conditions can degrade the medicine. Even when empty, the canister must not be punctured or exposed to flame or high heat under any circumstances.
All medicines, including Foracort 400, must be kept where children are completely unable to reach or see them. Because environmental factors can degrade the inhaler, it must always be kept in its original packaging when a dose is not being taken. The dose counter must be checked regularly to ensure a replacement inhaler is ordered before the current one is exhausted.
Do not use the inhaler after its expiry date. Safe disposal of an empty inhaler must be discussed with your pharmacist, who can advise on inhaler take-back schemes available through local pharmacies. Many pharmacies offer inhaler take-back schemes as part of NHS sustainability initiatives. Never dispose of inhalers in general household waste.
Responsible Access to Treatment in the UK
As a prescription-only medicine (POM) in the UK, Foracort 400 can only be legally obtained through a valid prescription from a registered UK doctor.
Purchasing inhalers from unregulated online sources carries significant risks to patient safety and must be avoided entirely. The MHRA warns that counterfeit inhalers may not contain the correct dose and can be extremely dangerous.
Before starting, stopping, or modifying this treatment in any way, a registered UK doctor or pharmacist must always be consulted.
FAQs
Q: What is Foracort 400 used for?
A: Each dose of Foracort 400 is formulated with Budesonide 400mcg and Formoterol 6mcg as its two active constituents. It treats severe asthma and COPD in adults. Foracort 400 must only be used under the supervision of a registered UK doctor or respiratory specialist.
Q: Is Foracort a strong steroid?
A: Foracort 400 contains a higher-dose inhaled corticosteroid. It is not a systemic steroid. It works locally in the airways and is prescribed for poorly controlled or severe respiratory conditions.
Q: What are the common mistakes when using an inhaler?
A: Common mistakes include not shaking the inhaler, inhaling too quickly, poor lip seal, and skipping mouth rinsing afterwards. Because correct inhaler technique is essential to effective treatment, the guidance provided by your doctor or pharmacist on technique must be followed carefully at all times.
Q: Does Foracort 400 affect blood sugar?
A: Blood glucose levels may be affected by inhaled corticosteroids at higher doses, meaning diabetic patients should monitor their blood sugar regularly and report any changes to their doctor. Always inform your doctor before starting treatment. Always inform your doctor before starting treatment.
Conclusion
Foracort 400 is a high-strength combination prescription inhaler containing Budesonide 400mcg and Formoterol 6mcg. Long-term management and prevention of severe asthma and COPD symptoms in adult patients are the clinical indications for which this medicine is prescribed.
It works through a dual mechanism. Budesonide 400mcg provides strong anti-inflammatory cover whilst Formoterol 6mcg relaxes airway muscles to improve breathing. The reference UK brand Symbicort may be better known to some patients. This is completely normal as they contain the same active ingredient.
Correct inhaler technique, regular medical review, and consistent daily use are all essential for Foracort 400 to work safely and effectively. At this higher strength, regular monitoring by your doctor is particularly important.
Never stop using this inhaler suddenly without first speaking to your doctor. Where concerns arise about a respiratory condition or the use of this inhaler, your GP or a registered UK pharmacist should be consulted without delay.
References
- NHS. Asthma: Treatment. Available at: www.nhs.uk
- MHRA. Budesonide/Formoterol Inhalers: Safety Information. Available at: www.gov.uk/mhra
- NICE. Asthma: Diagnosis, Monitoring and Chronic Asthma Management (NG80). Available at: www.nice.org.uk
Important Information
This article is for informational purposes only and does not replace professional medical advice. Always consult a registered healthcare professional before starting or changing any treatment. As a prescription-only medicine, Foracort 400 is permitted for use only where active supervision by a registered UK doctor or respiratory specialist is in place.