I use anti inflammatory because of my arthritis (probably caused by CF inflammation).
Here is what the pharmacologist on my cf team wrote me (an adult) about AI therapy:
<b><i>High dose ibuprofen (~ 1000 mg twice daily) reduces inflammation and improves lung function in CF patients with mild lung disease; however, experimental data showed that lower doses may actually increase inflammation. Therefore, it is possible that you could feel worse on ibuprofen therapy. We do not use much chronic ibuprofen therapy because of concerns for hemoptysis and risk of kidney failure.</i></b>
He mentions the kidneys becauee he is dealing with adults, who have probably had their kidneys over worked in general.
This is all I know about actual AI therapy.