Medication · Respiratory

Beclometasone (inhaled)

Also known as: beclomethasone, beclometasone dipropionate inhaler

An inhaled corticosteroid taken every day to calm the airway inflammation of asthma and prevent attacks; the preventer that reliever inhalers cannot replace.

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Generic name
Beclometasone (inhaled)
Active ingredient
Beclometasone (inhaled) (variants: beclometasone dipropionate, beclomethasone dipropionate)
Product type
Small-molecule medicine
Drug class
Corticosteroids
Brand names
UK Clenil Modulite, Qvar, Kelhale, Fostair (with formoterol) · US Qvar RediHaler
Routes
Inhaled (Inhaled (metered-dose inhaler, dry-powder inhaler))
Dosage forms
Metered-dose inhaler, Dry-powder inhaler
Also known as
beclomethasone, beclometasone dipropionate inhaler
Forms
Metered-dose inhaler (best with a spacer) and dry-powder inhaler, usually twice daily; combination inhalers with formoterol; different brands are not interchangeable dose for dose
Onset and duration
Improvement over 1-2 weeks; full effect after several weeks of regular use. Not a reliever: it does nothing for an attack in progress.
Terminology
RxNorm RxCUI 1347 · ATC R03BA01 · FDA EPC Corticosteroid [EPC]
Monitoring
Asthma control (symptoms, reliever use, peak flow) at each review; inhaler technique; growth in children; the lowest dose that keeps control is used.

Availability by country

CountryStatusNoteSource
UKPrescription only UK

Legal status differs between countries and can change; each row cites the document it was taken from and applies only to the country named.

What it is used for

  • Preventing asthma symptoms and attacks, used every day even when well
  • COPD only in combination inhalers for people with frequent exacerbations
  • Nasal spray and cream forms treat rhinitis and skin inflammation (separate products)

How it works in the body

Inhaled into the airways, beclometasone enters the cells lining them and binds glucocorticoid receptors, which switch off the genes driving inflammation and switch on anti-inflammatory ones. Over days to weeks the swelling, mucus and twitchiness of asthmatic airways subside, so attacks become less likely. Because it acts locally at small doses, the whole-body effects of steroid tablets are largely avoided, though the mouth and throat are exposed with each dose.

Common side effects

  • Oral thrush and a hoarse voice, reduced by rinsing the mouth and using a spacer
  • Sore throat, cough

Serious: seek help

  • Rarely, at high doses: adrenal suppression, slowed growth in children, bone thinning, cataracts, glaucoma or bruising
  • Worsening breathing immediately after a dose (paradoxical bronchospasm)
  • Signs of an allergic reaction

Cautions and interactions

  • Taken every day as prescribed; stopping it is a common cause of asthma attacks
  • Brands and devices differ in dose equivalence and are prescribed by brand
  • High doses: a steroid card, and monitoring of growth in children
  • Strong CYP3A4 inhibitors (ritonavir, some antifungals) can raise steroid exposure
  • Tuberculosis or untreated respiratory infections

Interactions

Check interactions

Taking Beclometasone (inhaled) with other medicines? Add them to the checker to see what the official sources say about each pair: the mechanism, general management and monitoring, never a bare "safe".

Check Beclometasone (inhaled) interactions

Interactions documented in the official sources cited on each card. The list covers the medicines represented on this site and is not exhaustive; how the interaction data is compiled.

No pair records for this medicine are in the sources currently represented by Anatomy Nexus. Absence from this list does not mean no interaction exists.

As a member of Corticosteroids

Records written for the whole corticosteroids class apply to Beclometasone (inhaled).

Metformin + Corticosteroids (class)

Severity not gradedInteraction documented

Systemic corticosteroids raise blood glucose and can reduce diabetes control on metformin.

Why it can occur
pharmacodynamic antagonism
What official information says
UK information lists steroid tablets among medicines that affect blood sugar.
What to discuss with a clinician
Documented; glucose monitoring during and after a steroid course.
What may be monitored
Blood glucose · Blood glucose
Basis of the status
NHS: Taking metformin with other medicines (tell your doctor)
Sources
BNF: Metformin interactions (Interactions) UK
NHS: Metformin (Taking it with other medicines and herbal supplements · Medicines that interact with metformin) UK
Review
Facts checked against the cited sources; not yet clinically reviewed · last reviewed 12 September 2026

Same-class and related medicines

Same class: Corticosteroids

Inhaled corticosteroidsPrednisolone and steroidsbeclometasonebudesonidedexamethasonefluticasonehydrocortisonemethylprednisoloneprednisoloneprednisone

Medicines that share the class of Beclometasone (inhaled). They are separate medicines with their own licences, doses and interactions, not alternative names for Beclometasone (inhaled).

Related medicines

Medicines often discussed alongside Beclometasone (inhaled): used together, compared with it, or acting on the same problem by a different route.

Educational content. Anatomy Nexus provides medical education and does not replace professional medical advice, diagnosis, treatment, prescribing or pharmacist review. Doses, choices and monitoring are decided by a prescriber for an individual; never start, stop or change a medicine on the basis of this page.