If you're having an asthma attack, sit up straight, to help your breathing. Try to stay calm.

Use your asthma reliever inhaler if you have one:

• If you have a blue reliever inhaler, take 1 puff every 30 to 60 seconds until you feel better, up to a maximum of 10 puffs. Shake the inhaler between each puff and use a spacer with the inhaler if you have one.
• If you have an AIR or MART inhaler (used for both preventing and treating symptoms), take 1 puff every 1 to 3 minutes until you feel better, up to a maximum of 6 puffs.

If your personal asthma action plan has a different maximum dose for treating an asthma attack, follow the instructions in your plan.

Call 999 if:

You or someone else is having an asthma attack and:

• start to feel worse at any time
• do not feel better after taking the maximum dose using an asthma reliever inhaler
• do not have an asthma inhaler

If symptoms are no better after 10 minutes and an ambulance has not arrived, use an asthma inhaler again if you have one, taking up to the same maximum dose.