First Time User? Enroll now.
COVID-19: Vaccine information, visitor restrictions, testing, and additional resources
Home > Health Library > Asthma Action Plan
An asthma action plan is a written plan that tells you what asthma medicine to take every day and how to treat an asthma attack. It can help you make quick decisions in case you can't think clearly during an attack.
Your plan can help you stay active and have fewer problems. It may include:
Your plan is based on zones defined by your symptoms or your peak flow, or both. It tells you what to do when you're in each zone.
Asthma zones are part of your asthma action plan. The zones are defined by your symptoms, your peak flow, or both. Knowing what zone you're in can help you know how well your asthma is under control and if you need help.
The three zones are:
Green means good. This zone is where you want to be.
When you're in the green zone, one or more of these things may be true:
Yellow means caution. If you're in this zone, it may mean you're having an asthma attack or that your medicine needs to be increased.
When you're in the yellow zone, one or more of these things may be true:
Red means DANGER. If you're in this zone, you may be having a severe asthma attack. Being in the red zone is dangerous. If you're in the red zone, you need to take action right away.
When you're in the red zone, one or more of these things may be true:
Current as of:
July 6, 2021
Author: Healthwise StaffMedical Review: E. Gregory Thompson MD - Internal MedicineAdam Husney MD - Family MedicineRohit K Katial MD - Allergy and Immunology
Current as of: July 6, 2021
Author: Healthwise Staff
Medical Review:E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & Rohit K Katial MD - Allergy and Immunology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2022 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.