As far as I know, it's the ONLY med that has been shown to reduce the progression of IPF or have any effect on IPF at all. Since IPF is progressive, unpredictable and irreversible disease, leading to certain death, a med that reduces the progression is a treat improvement over nothing. It's not a cure but it's definitely an improvement. Expensive, yes. But compared to nothing, maybe worth it to you.

I was going to ask the same question what is IPF?

What is IPF