Albuterol: what it treats, how to take it, side effects
Last updated September 7, 2026.
**Albuterol is an inhaled rescue medicine in the short-acting beta2 agonist bronchodilator class.** It relaxes muscles around your airways so air moves more easily. If your usual dose stops helping or you need it more often, seek medical advice promptly instead of increasing it yourself.
What does it treat?
You may use albuterol for wheezing, chest tightness, cough, or shortness of breath caused by narrowed airways in asthma or COPD, or before exercise to prevent symptoms. It does not treat airway inflammation. Combination products include albuterol with ipratropium for COPD and albuterol with budesonide for asthma; their dosing differs.
How do you take it?
You inhale albuterol through your mouth using an aerosol inhaler, powder inhaler, or nebulizer; do not swallow nebulizer liquid. Typical adult aerosol dosing is 2 puffs every 4 to 6 hours as needed, or 2 puffs 15 to 30 minutes before exercise. The label advises against larger or more frequent doses. For 0.083% nebulizer solution, typical adult dosing is one 2.5 mg/3 mL vial three or four times daily, with no more than four doses daily unless directed. Follow your device instructions and prescription. Food does not affect dosing. For scheduled treatment, take a missed dose when remembered unless nearly time for the next; never double it. Stop and get immediate help if breathing worsens right after inhalation.
Side effects to know
- Common: You may notice shakiness, nervousness, headache, throat irritation, or a faster heartbeat.
- Serious: Stop using albuterol and get immediate medical help for sudden worsening wheezing, facial or throat swelling, chest pain, or a persistent fast or irregular heartbeat. Marked weakness or muscle cramps can signal low potassium and need urgent assessment.
Who should not take it?
Do not use it if you are allergic to albuterol or its ingredients; some powder inhalers also exclude people with severe milk protein allergy. Discuss heart disease, abnormal rhythms, high blood pressure, seizures, overactive thyroid, or diabetes with your doctor. Review other medicines, pregnancy, and breastfeeding before use. Pregnancy data do not consistently show increased birth defects or miscarriage; breast milk data are unavailable. FDA labeling gives no specific alcohol restriction.
When is it an emergency?
An overdose can cause severe shaking, chest pain, a racing or irregular heartbeat, or seizures. Call Poison Control at 1-800-222-1222 for overdose, even without symptoms. Call 911 for collapse, seizures, severe chest pain, or breathing trouble that is severe, worsens immediately after inhalation, or does not improve with your rescue treatment. Hives with throat swelling or breathing trouble can mean anaphylaxis and require 911.
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Common questions
What is the maximum daily dose?
Your limit depends on your product and prescription. The aerosol label recommends 2 puffs every 4 to 6 hours and advises against more frequent or larger doses. The 0.083% nebulizer label recommends 2.5 mg three or four times daily. Do not combine these limits or add combination inhalers without instructions.
Can I drink alcohol?
FDA labeling does not specify an alcohol ban. Avoid alcohol if it triggers your breathing symptoms. Your other medicines or health conditions may require restrictions.
Can I use it during pregnancy or breastfeeding?
Review your treatment with your doctor rather than stopping it yourself. Available pregnancy data do not consistently show increased major birth defects or miscarriage, and uncontrolled asthma also carries risks. The label reports no human milk or infant effect data, so breastfeeding decisions weigh your treatment needs and breastfeeding benefits.
Do I need food before a dose?
You can use inhaled albuterol with or without food. Keep your usual diet unless instructed otherwise. You breathe this medicine into your lungs.
What are overdose signs?
Severe tremor, racing heartbeat, chest pain, and seizures can occur. Call Poison Control at 1-800-222-1222 if you take too much. Call 911 for collapse, seizures, or breathing trouble.
Which medicines interact with albuterol?
Tell your clinician about beta blockers such as propranolol, diuretics such as furosemide, digoxin, and other airway medicines. MAO inhibitors and tricyclic antidepressants need special review, including within 2 weeks after stopping them. These combinations can affect breathing, heart rhythm, or potassium; do not stop prescriptions yourself.