What should you know about a blue asthma inhaler?

Reliever inhalers open narrowed airways, making it easier to breathe during an asthma episode. They can ease wheezing, cough, and chest tightness, but they do not remove the underlying airway inflammation or prevent every future flare. Inhaler colour is not a reliable way to identify the medicine, because devices and prescribing choices vary. Check the label and follow the personal asthma plan supplied by your clinician.

Needing the reliever more often than planned, waking with symptoms, or finding that it gives less relief may mean your asthma needs review. Allergic rhinitis, house dust mite allergy, smoke, exercise, and respiratory infections can all influence symptoms.

Use the inhaler exactly as prescribed and practise the technique with a pharmacist or clinician. Sit upright during symptoms, shake and breathe in as directed for your device, and use a spacer if one has been prescribed. Keep it accessible, check that it has medicine remaining, and replace it before it is empty. Do not share it or increase use beyond your plan without advice. A written asthma plan should explain your reliever steps and your regular preventer treatment.

Follow your emergency asthma plan and seek urgent help if breathing remains difficult after the prescribed reliever, you cannot speak comfortably, your lips look blue or grey, you become exhausted or confused, or symptoms worsen quickly. Do not drive yourself if breathing is severely impaired. A nebuliser may be used by healthcare professionals in some urgent settings, but it is not a substitute for emergency assessment.

Ask whether your inhaler is a reliever, how many doses your plan allows, and whether you need a spacer or technique check. Ask how to recognise poor control, which preventer is appropriate, and when to arrange a review after a flare.