Beclometasone / Formoterol
Brand names: Fostair 100/6, Fostair 200/6, Luforbec
This is a fixed-dose inhaler combining the inhaled corticosteroid beclometasone with the long-acting beta-2 agonist formoterol, used as maintenance (and in some products maintenance-and-reliever) therapy for asthma and COPD.
Adult dose
Dose adjustments
No dose adjustment is stated because there are no data — §4.2 Special patient groups, verbatim: 'There are no data available for use of beclometasone dipropionate/formoterol in patients with hepatic or renal impairment (see section 5.2).'
No dose adjustment is stated because there are no data — §4.2 Special patient groups, verbatim: 'There are no data available for use of beclometasone dipropionate/formoterol in patients with hepatic or renal impairment (see section 5.2).'
Dose independently re-sourced from UK Summary of Product Characteristics (SPC) via the eMC — clinician-reviewed. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- Hypersensitivity to the active substances or to any of the excipients — §4.3 verbatim and in full: 'Hypersensitivity to active substances or any of the excipients listed in section 6.1.'
- Not a contraindication but a §4.2/§4.4 restriction: the product 'is not intended for the initial management of asthma', and 'Patients should not be initiated on beclometasone dipropionate/formoterol during an exacerbation, or if they have significantly worsening or acutely deteriorating asthma.'
- Not a contraindication but a §4.4 timing rule: 'If anaesthesia with halogenated anaesthetics is planned, it should be ensured that this medicinal product is not administered for at least 12 hours before the start of anaesthesia as there is a risk of cardiac arrhythmias.'
- Not a contraindication but a §4.4 caution list: cardiac arrhythmias (especially third degree atrioventricular block and tachyarrhythmias), idiopathic subvalvular aortic stenosis, hypertrophic obstructive cardiomyopathy, severe heart disease particularly acute myocardial infarction, ischaemic heart disease, congestive heart failure, occlusive vascular diseases particularly arteriosclerosis, arterial hypertension and aneurysm; known or suspected QTc prolongation, congenital or drug induced (QTc > 0.44 seconds); thyrotoxicosis, diabetes mellitus, phaeochromocytoma and untreated hypokalaemia; active or quiescent pulmonary tuberculosis and fungal or viral infections in the airways.
- This list may be incomplete — check the full SPC.
Side effects
- Common: pharyngitis, oral candidiasis, pneumonia (in COPD patients), headache, dysphonia
- Uncommon: influenza, oral fungal infection, oropharyngeal candidiasis, oesophageal candidiasis, vulvovaginal candidiasis, gastroenteritis, sinusitis, rhinitis
- Uncommon: hypokalaemia, hyperglycaemia; granulocytopenia; allergic dermatitis; restlessness; tremor, dizziness; otosalpingitis
- Uncommon: palpitations, QT corrected interval prolonged, electrocardiogram change, tachycardia, tachyarrhythmia, atrial fibrillation; hyperaemia, flushing
- Uncommon: cough, productive cough, throat irritation, asthmatic crisis; diarrhoea, dry mouth, dyspepsia, dysphagia, burning sensation of the lips, nausea, dysgeusia; pruritus, rash, hyperhidrosis, urticaria; muscle spasms, myalgia
- Rare: ventricular extrasystoles, angina pectoris; paradoxical bronchospasm; angioedema; nephritis
- Very rare: thrombocytopenia; hypersensitivity reactions including erythema and oedema of the lips, face, eye and pharynx; adrenal suppression, Cushing's syndrome and Cushingoid features; glaucoma, cataract; dyspnoea, exacerbation of asthma; growth retardation in children and adolescents; peripheral oedema
- Not known: psychomotor hyperactivity, sleep disorders, anxiety, depression, aggression, behavioural changes (predominantly in children); blurred vision
- §4.8 was truncated at the source-fetch limit mid-way through the Investigations class ('C-reactive protein increased, platelet count increased, free […]') — the remaining reactions were not retrieved.
Monitoring
- Serum potassium — §4.4: 'Potentially serious hypokalaemia may result from beta-2-agonist therapy. Particular caution is advised in severe asthma as this effect may be potentiated by hypoxia… Caution is also recommended in unstable asthma when a number of "rescue" bronchodilators may be used. It is recommended that serum potassium levels are monitored in such situations.'
- Blood glucose in diabetes — §4.4: 'The inhalation of formoterol may cause a rise in blood glucose levels. Therefore, blood glucose should be closely monitored in patients with diabetes.'
- Dose-related adverse effects in frequent as-needed users — §4.2: 'Close monitoring for dose-related adverse effects is needed in patients who frequently take high numbers of this medicinal product as-needed inhalations.'
- Rescue-inhaler use as a control marker — §4.4: 'Increasing use of rescue bronchodilators indicates a worsening of the underlying condition and warrants a reassessment of the asthma therapy.'
- Regular medical review of the dose — §4.2: 'Patients should be regularly reassessed by a doctor, so that the dosage of this medicinal product remains optimal and is only changed on medical advice.'
- Cardiac monitoring where §4.4 cautions apply: 'Beclometasone dipropionate/Formoterol should be used with caution (which may include monitoring) in patients with cardiac arrhythmias…' and where QTc prolongation is known or suspected.
- Inhaler technique and the dose counter — patients should be shown how to use the inhaler correctly, and should replace it when the counter shows 20 (§4.2).
Clinical monograph
How it works
Beclometasone reduces airway inflammation through glucocorticoid receptor activation, while formoterol is a rapid-onset long-acting beta-2 agonist that relaxes bronchial smooth muscle.
Prescribing in practice
- Most important: a long-acting beta-2 agonist must never be used without the inhaled corticosteroid in asthma, so this fixed combination should not be co-prescribed with a separate LABA and adherence to the steroid component is essential.
- Confirm the patient can use the specific device correctly, as extra-fine particle formulations are not interchangeable dose-for-dose with other beclometasone products.
- Review inhaler technique and exacerbation frequency, and step therapy up or down according to control.
Monitoring
Monitor asthma or COPD control, inhaler technique, growth in children on long-term inhaled corticosteroid, and for candidiasis.
Counselling the patient
- Rinse the mouth after inhaling to reduce oral thrush and hoarseness.
- Use it regularly as prescribed even when feeling well, and carry a separate reliever unless told this inhaler is your reliever too.
Evidence & guidelines
ICS/LABA combination therapy is established in NICE, GINA, and GOLD guidance for persistent asthma and symptomatic COPD.
Reference: GINA 2024; COSMOS Trial; BTS/SIGN Asthma Guidelines 2019; SPC Fostair; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
Related
Curated clinical cross-links plus same-class fallbacks.
- Acute Asthma in Adults · BTS/SIGN British Guideline on Asthma 2019; NICE NG80
- Pulmonary Embolism Assessment · NICE NG158; ESC 2019 PE Guidelines
- Acute Exacerbation of COPD (AECOPD) · NICE NG115; GOLD 2024
- Spontaneous Pneumothorax (Adult) · BTS Pleural Disease 2023
- Atypical Pneumonia (Legionella / Mycoplasma / Chlamydophila) · BTS 2023; IDSA
- COPD Exacerbation Management · NICE NG115 / GOLD 2024