The turbohaler is available in strengths of 100, 200 and 400 micrograms. Your doctor will prescribe the strength appropriate for you – this will depend on a number of factors including the severity of your asthma, your age, and your medical history. Generally, you will be advised to take one or two puffs twice per day.
If your asthma is very severe, your doctor will increase your recommended dose, but it will not exceed 1600mcg per day.