Does dry salt inhaler work? is it safe to use?

Inhalers: I have never heard of a "dry salt" inhaler. Can you be more specific? Are you referring to inhalers to treat asthma? If so, there is no such thing as a "dry salt" inhaler.

Don't know: There are many positive anecdotes and testimonials, but unfortunately extremely little published data looking at effects of inhaling dry-salt. Dry salt inhalers are not used routinely in clinical practice, which is not to say there would be no benefit, but the effect--positive or negative--one achieves probably depends specifically on what lung disease you have. Discuss further with your doctor.