Salbutamol — Reliever Inhaler Guide | KiwiMeds
✅ Reviewed by a Registered Pharmacist NZ | Last updated: May 2026 | This information is for educational purposes only and does not replace advice from your doctor or pharmacist.
What is salbutamol?
Salbutamol is a short-acting bronchodilator (reliever inhaler) used to quickly relieve asthma and other breathing difficulties. In New Zealand it is most commonly known by the brand name Ventolin. It works within minutes to open up the airways, making it easier to breathe.
What is it used for? (NZ context)
Salbutamol is used to relieve the sudden symptoms of asthma — wheeze, chest tightness, shortness of breath, and cough. It is also used in COPD. Generic salbutamol inhalers are fully funded by Pharmac in New Zealand.
How does it work?
Salbutamol is a beta-2 agonist. It stimulates beta-2 receptors in the airway muscles, causing them to relax and widen (bronchodilation). This reduces airway resistance and makes breathing easier. The effect starts within minutes and lasts 4–6 hours.
How to take it
Use your salbutamol inhaler when you feel asthma symptoms coming on. The usual dose is 1–2 puffs. Always use a spacer device for better delivery, especially for children. If you are using your reliever more than twice a week, talk to your doctor — your asthma may not be well controlled.
Common side effects
- Tremor (shakiness) — especially in the hands
- Increased heart rate (palpitations)
- Headache
- Feeling anxious or jittery
Serious side effects to watch for
If you need to use your salbutamol more than usual, or if it is not giving relief, seek medical attention immediately. Overuse of reliever inhalers can mask worsening asthma.
Important drug interactions
Beta-blockers (such as propranolol or atenolol) can block the effects of salbutamol and should generally be avoided in people with asthma. Some heart medicines can increase the risk of heart rhythm problems if used with high doses of salbutamol.
NZ-specific information
Pharmac funding: Generic salbutamol inhalers (100 mcg) are fully funded by Pharmac. Ventolin branded inhalers may have a co-payment. NZ brand names include Ventolin, Respigen, and Salamol.
Frequently asked questions
How often can I use my salbutamol inhaler?
Salbutamol can be used as needed for symptoms. If you need it more than twice a week (not counting exercise), your asthma is not well controlled — see your doctor about adding a preventer inhaler.
Does salbutamol have a blue cap in NZ?
Yes — reliever inhalers in New Zealand are traditionally blue. This helps distinguish them from preventer (typically brown or orange) and combination inhalers.
Can I use salbutamol during pregnancy?
Salbutamol is generally considered safe during pregnancy and breastfeeding when needed. Untreated asthma poses a greater risk than the medication. Always discuss with your doctor or midwife.
💬 Talk to your pharmacist or doctor for personalised advice about salbutamol.
Reviewed by a Registered Pharmacist NZ | BPharm, Pharmacy Council of New Zealand
References & Further Information
The following New Zealand and international resources were used to inform this page: