Ventolin

Pronunciation: VEN-toh-lin.

Generic name
salbutamol (known as albuterol in the United States)
Drug class
Short-acting beta-2 agonist (SABA) bronchodilator
Form
Pressurised metered-dose inhaler, 100 micrograms (UK/EU/Australia/NZ) or 90 mcg albuterol base/108 mcg albuterol sulfate (US) per actuation
Route
Oral inhalation (also available as nebuliser solution and, in some markets, injection/syrup)
Legal status
Prescription-only

Availability and supply rules vary by country

Trade names by country: United States · United Kingdom · Canada · Australia · New Zealand

Australia: Ventolin Inhaler CFC-Free (5) · Full directory

What salbutamol (known as albuterol in the United States) is and how it works

Ventolin is a prescription quick-relief (rescue) inhaler that relaxes the muscles around the airways, making it easier to breathe during an asthma attack or other sudden breathing difficulty caused by reversible airway narrowing. It works within about 5 minutes and its effect lasts roughly 4-6 hours. (1) (2)

Ventolin is not a preventer inhaler and does not treat the underlying inflammation in asthma -- needing it more often than usual is a sign that asthma control is slipping and needs medical review, not a reason to simply keep increasing how much you use it.

Mechanism of action: how salbutamol (known as albuterol in the United States) works

Salbutamol (albuterol) is a selective beta-2 adrenergic receptor agonist that relaxes bronchial smooth muscle, producing bronchodilation within minutes of inhalation, with effects lasting approximately 4-6 hours. At higher systemic exposure, beta-2 stimulation can also lower serum potassium and raise blood glucose, and cross-reactivity with cardiac beta-1 receptors can produce tachycardia and other cardiovascular effects. (1)

What salbutamol (known as albuterol in the United States) is used for

Relief and prevention of bronchospasm in asthma and other reversible airway disease

Used to treat or prevent sudden breathing difficulty (bronchospasm) caused by asthma, chronic obstructive pulmonary disease (COPD), or other conditions with reversible airway narrowing. (1) (5)

Prevention of exercise-induced bronchospasm

Used before exercise or exposure to a known trigger to help prevent bronchospasm from occurring. (1) (2)

Before taking salbutamol (known as albuterol in the United States)

Do not take / not appropriate for

  • Do not use Ventolin if you have a known hypersensitivity (allergy) to salbutamol or to any of the inhaler's ingredients. (all countries) (1) (2)
  • Must not be used to treat threatened abortion or premature labour. (United Kingdom, European Union) (2)

Tell your clinician about

  • Any heart condition, including arrhythmias, coronary artery disease, or high blood pressure.
  • Overactive thyroid (hyperthyroidism) or diabetes.
  • All other medicines, especially beta-blockers, diuretics, digoxin, MAOIs, or tricyclic antidepressants.
  • Whether you are pregnant, planning pregnancy, or breastfeeding.
  • If you find yourself needing Ventolin more often than usual, or needing more than 8 inhalations in 24 hours -- this signals your asthma needs to be reviewed, not just more inhaler use.
(1) (2)

How to take salbutamol (known as albuterol in the United States)

  • Prime the inhaler with test sprays into the air before first use, after 2 or more weeks of not using it, or if it has been dropped -- check the specific product leaflet for the exact number of test sprays.
  • For sudden symptoms: use as directed by your clinician, typically 1-2 inhalations, repeated only as advised.
  • For prevention before exercise: use shortly before exercise or the known trigger, as directed.
  • Do not use more than the maximum recommended in any 24-hour period without medical advice -- needing it more often means your asthma treatment plan needs to be reviewed.
(1) (2)

Procedures and treatment changes

Tell the treating team before surgery, procedures, or any medicine change. Do not alter treatment without the responsible clinician. (1) (2) (3) (4) (5) (6)

Missed dose

Ventolin is used as needed for symptoms or before a specific trigger, not on a fixed daily schedule, so a 'missed dose' in the usual sense does not apply -- use it when you next need it, following your prescriber's plan.

Overdose

Seek urgent medical attention if you think you have used too much Ventolin, or if you develop a very fast or irregular heartbeat, chest pain, severe tremor, or severe headache after using it. (1)

Side effects

Side effects and their urgency vary; report severe, persistent, or concerning symptoms.

Tremor (shakiness), headache, and fast or pounding heartbeat (tachycardia/palpitations).

What to notice: Tremor (shakiness), headache, and fast or pounding heartbeat (tachycardia/palpitations).

What to do: Discuss persistent or troublesome symptoms with the treating clinician or pharmacist. (2)

Throat irritation, cough, and muscle cramps.

What to notice: Throat irritation, cough, and muscle cramps.

What to do: Discuss persistent or troublesome symptoms with the treating clinician or pharmacist. (1) (2)

Viral respiratory infection and upper airway irritation have also been reported.

What to notice: Viral respiratory infection and upper airway irritation have also been reported.

What to do: Discuss persistent or troublesome symptoms with the treating clinician or pharmacist. (1)

Serious warnings

Sudden worsening of breathing right after using the inhaler (paradoxical bronchospasm) — emergency

Symptoms: Wheezing or difficulty breathing that gets worse immediately after using Ventolin, instead of better.

Action: Get emergency medical help immediately and tell the treating team you have been using $1 -- this reaction can be life-threatening. (1) (3)

Needing the inhaler much more often, or more than 8 inhalations in 24 hours — high caution

Symptoms: Increasing reliance on Ventolin for symptom relief, or reaching/exceeding the maximum recommended daily inhalations.

Action: Contact your clinician promptly -- fatalities have been reported in association with excessive use of short-acting bronchodilators like Ventolin, and this pattern signals your asthma needs urgent treatment review, not simply more inhaler use. (1) (2)

Signs of a serious allergic reaction — emergency

Symptoms: Swelling of the face, lips, tongue, or throat; difficulty breathing; widespread rash or hives.

Action: Seek emergency medical help immediately. (1)

Heart-related symptoms — high caution

Symptoms: Chest pain, a fast or irregular heartbeat, or severe palpitations.

Action: Seek prompt medical attention, especially if you have an existing heart condition. (1)

Interactions

  • Beta-blocker medicines (including eye drops) can block Ventolin's effect and trigger severe bronchospasm -- non-selective beta-blockers such as propranolol should generally be avoided. (1) (2)
  • Diuretics that are not potassium-sparing may worsen low blood potassium (hypokalaemia) when combined with Ventolin. (1)
  • Digoxin levels may fall when taken with Ventolin -- monitoring may be needed. (1)
  • MAOIs and tricyclic antidepressants require extreme caution, as they may increase Ventolin's effects on the heart and blood vessels. (1)

Pregnancy, breastfeeding, kidney/liver function, age

Pregnancy

Sourced labels advise caution: the US label describes no consistent birth-defect signal from human data, though animal studies showed cleft palate at high doses; the UK label advises avoiding use unless clearly necessary, citing animal teratogenic effects and limited human data. Discuss with your clinician if you are pregnant. (1) (2) (3) (4) (5) (6)

Breastfeeding

Plasma levels after inhalation are low; presence in breast milk is not well characterised but thought likely minimal. Discuss with your clinician if you are breastfeeding. (1) (2) (3) (4) (5) (6)

Children

Authorised from 4 years of age (US) or with specialist guidance from 4 years and standard use from around 12 years in some markets; dosing frequency is lower in younger children -- follow your child's prescriber's specific plan. (1) (2) (3) (4) (5) (6)

Elderly

No specific dose adjustment identified in the sources reviewed, but cardiovascular caution applies especially in older adults with existing heart disease. (1) (2) (3) (4) (5) (6)

Hepatic_impairment

No specific guidance identified in the sources reviewed for this inhaled product. (1) (2) (3) (4) (5) (6)

Renal_impairment

No specific guidance identified in the sources reviewed for this inhaled product. (1) (2) (3) (4) (5) (6)

Source_ids

US-DAILYMED-VENTOLINHFA-2026,UK-EMC-VENTOLIN-EVOHALER-2026 (1) (2) (3) (4) (5) (6)

Monitoring

Before starting

  • Review of asthma/COPD control and how often a reliever inhaler is currently needed
  • Cardiovascular history (arrhythmia, coronary disease, hypertension)
  • Thyroid and diabetes history
  • Review of other medicines, especially beta-blockers

During treatment

  • Track how often you need to use Ventolin -- increasing use is itself a warning sign requiring medical review.
  • Watch for cardiovascular symptoms (palpitations, chest pain) or tremor that is troublesome.
  • Periodic reassessment of overall asthma/COPD control by your clinician.
(1) (2)

Storage

Store below 30C (86F), away from frost, direct sunlight, heat, and flame; do not puncture, break, or burn the canister even when it appears empty; keep out of reach of children.

Professional information

Clinician-facing context only, sourced from the current US FDA prescribing information and UK SmPC; verify against the current full label before prescribing.

United States / Canada

Indication: Bronchospasm relief/prevention, exercise-induced bronchospasm prevention, ages 4+

Dose summary: 2 inhalations every 4-6 hours as needed (1 may suffice in some patients); 2 inhalations 15-30 minutes pre-exercise.

Renal context: Not applicable -- inhaled product with minimal systemic renal handling relevance in the sources reviewed. (1) (4)

United Kingdom / European Union / Australia / New Zealand

Indication: Bronchospasm relief/prevention, ages 4+

Dose summary: 1-2 inhalations as needed (adults/12+), lower frequency in younger children; maximum 8 inhalations/24h on demand; up to 4 times daily for regular use.

Renal context: Not applicable -- inhaled product with minimal systemic renal handling relevance in the sources reviewed. (2) (3)

Mechanism of action

Hepatic guidance

No hepatic-specific guidance identified in the sources reviewed.

Overdose note

Overdose may present with exaggerated beta-agonist effects: tachycardia, arrhythmia, tremor, hypokalaemia, and hyperglycaemia; manage with supportive care and cardiac monitoring; beta-blockade for cardiovascular toxicity should be used cautiously given bronchospasm risk. (1)

Frequently asked questions

Is Ventolin available in the US, UK, Europe, Canada, Australia, and New Zealand?

Yes. It is authorised in all six markets, confirmed via direct regulator sources: as Ventolin HFA in the United States and Canada, Ventolin Evohaler in the United Kingdom, Ventoline in France (and equivalent brands elsewhere in the EU), Ventolin Inhaler CFC-Free in Australia, and Ventolin Inhaler in New Zealand. (1) (2) (3) (4) (5) (6)

Is Ventolin the same as albuterol or salbutamol?

Yes. Ventolin is GlaxoSmithKline's brand name for the same active ingredient known as salbutamol internationally and albuterol in the United States. This page focuses on the Ventolin brand; other brands and the generic medicine are covered on this site's separate albuterol and salbutamol pages. (1) (2)

Why does needing Ventolin more often matter?

Ventolin only relieves symptoms -- it does not treat the underlying airway inflammation in asthma. Needing it more than usual, or using more than 8 inhalations in 24 hours, is a recognised warning sign of worsening or poorly controlled asthma, and fatalities have been reported in association with excessive reliever-inhaler use. This needs prompt medical review, not just continued or increased self-use. (1) (2)

What is the mechanism of action of salbutamol (known as albuterol in the United States)?

Salbutamol (albuterol) is a selective beta-2 adrenergic receptor agonist that relaxes bronchial smooth muscle, producing bronchodilation within minutes of inhalation, with effects lasting approximately 4-6 hours. At higher systemic exposure, beta-2 stimulation can also lower serum potassium and raise blood glucose, and cross-reactivity with cardiac beta-1 receptors can produce tachycardia and other cardiovascular effects. (1)

What is the generic name of Ventolin?

The generic name is salbutamol (known as albuterol in the United States). (1) (2)

What class of drug is salbutamol (known as albuterol in the United States)?

Ventolin is classed as: Short-acting beta-2 agonist (SABA) bronchodilator. (1) (2)

References

  1. VENTOLIN HFA (albuterol sulfate) inhalation aerosol -- full prescribing informationU.S. Food and Drug Administration / DailyMed (NIH), full prescribing information, GlaxoSmithKline · United States · accessed 2026-07-30 · source 1
  2. Ventolin Evohaler 100 micrograms -- Summary of Product Characteristicselectronic medicines compendium (emc), United Kingdom -- GlaxoSmithKline / Glaxo Wellcome UK Limited · United Kingdom · accessed 2026-07-30 · source 2
  3. VENTOLINE 100 microgrammes/dose, suspension pour inhalation en flacon pressurise -- official French medicines database entryAgence nationale de securite du medicament et des produits de sante (ANSM), France -- national marketing authorisation database · European Union (France, national authorisation) · accessed 2026-07-30 · source 3
  4. VENTOLIN HFA (salbutamol sulfate) -- Product MonographHealth Canada, Drug Product Database / Product Monograph, GSK Canada · Canada · accessed 2026-07-30 · source 4
  5. VENTOLIN INHALER CFC-Free (salbutamol 100 microgram) -- ARTG entry 62695 / 317221Therapeutic Goods Administration (TGA), Australia · Australia · accessed 2026-07-30 · source 5
  6. Ventolin Inhaler (CFC-free), salbutamol (as sulfate) -- New Zealand Data SheetMedsafe (New Zealand regulator) · New Zealand · accessed 2026-07-30 · source 6

Brand names by country

Single-ingredient salbutamol (known as albuterol in the United States) names are shown separately by country. Product availability, strengths, and supply rules can change; combination products are not included here.

Priority countries

United States

  • Ventolin HFA (1)FDA approved currently labeled · 90 mcg albuterol base (108 mcg albuterol sulfate) per actuation, 200 actuations · GlaxoSmithKline

United Kingdom

  • Ventolin Evohaler (2)MHRA licensed emc smpc confirmed · 100 micrograms per actuation · GlaxoSmithKline / Glaxo Wellcome UK Limited

Canada

  • VENTOLIN NEBULES P.F. -
  • VENTOLIN
  • VENTOLIN I.V. INFUSION SOLUTION 5.0MG SALBUTAMOL
  • VENTOLIN RESPIRATOR
  • AIROMIR
  • APO-SALVENT
  • APO-SALVENT STERULES
  • PHL-SALBUTAMOL RESPIRATOR
  • TEVA-SALBUTAMOL STERINEBS P.F.
  • DOM-SALBUTAMOL RESPIRATOR SOLUTION-1MG/ML

Australia

  • Ventolin Inhaler CFC-Free (5)TGA ARTG registered 1998-06-30 confirmed · 100 microgram per actuation · GlaxoSmithKline Australia Pty Ltd

New Zealand

  • Ventolin Inhaler (6)Medsafe registered datasheet updated 2025-04-16 confirmed · 100 mcg per actuation, 200 actuations · GSK New Zealand
View brands in additional countries.

European Union

Ventoline (France, national authorisation; equivalent brands in other EU member states) (3)

This page provides general reference information about Ventolin and is not a substitute for advice from the prescriber managing your asthma or airway condition. All dosing and treatment decisions should be made with your prescriber.

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