Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Asthma is controlled with inhalers, prescribed by a doctor. A "reliever" opens the airways quickly during symptoms, while a "preventer" (usually a steroid) is taken daily to reduce inflammation and prevent attacks.
Severe breathlessness, blue lips, or a reliever not working — emergency
Needing your reliever more than a couple of times a week
Waking at night with asthma symptoms
Prescription-only — see a doctor. This lists medicines commonly used for this condition to help you understand your options — it is NOT a prescription. Do not self-medicate: the right choice and dose depend on the cause, your health and other medicines, and prescription drugs (especially antibiotics) need a doctor. Misusing antibiotics drives resistance.
Frequently asked questions
What is the difference between reliever and preventer inhalers?
A reliever (salbutamol) opens the airways quickly during symptoms; a preventer (an inhaled steroid) is taken daily to reduce inflammation and prevent attacks.
Are steroid inhalers safe?
Yes — at usual doses inhaled steroids are safe and are the mainstay of asthma control. Rinse your mouth after using them to avoid thrush.
Why do I still get attacks if I use my inhaler?
Often because the preventer is not used regularly, technique is poor, or control needs stepping up. Needing your reliever often is a sign to see your doctor.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.