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If you have been asked to complete a peak flow diary, please find a peak flow diary here. A video demonstrating how to use your peak flow meter can be found here: https://youtu.be/UQa74XtQXf8.
Inhaler technique
If you do use an inhaler, making sure you use it correctly can make big improvements to your breathing.
See here or here for more information including videos on how to use inhalers.