HI, thanks for using healthcare magic
It is an inhaled steroid , used in persons with
asthma. Based on your description of your son's persistent
cough, it is possible that he is an asthmatic.
Inhaled
steroids are commonly used in asthma, they are one of the most widely used medications. Little of it would be absorbed in his system, most would stay in the lungs to help control his asthma.
Since most would stay in the lungs, there are little to no systemic effects.
It is different from someone who is taking steroid tablets.
There is a big risk associated with asthma that is not controlled. It can affect the quality of your son's life.
Frequent attacks would affect him at home or school and may lead to hospital visits.
If you are not sure, you should consider speaking to his doctor.
I hope this helps