I think omega 3's helped me. It affects my asthma and makes it hard to breathe. I took them for 2 months, asthma was settling down and since they were expensive I stopped taking the omega 3 supplement. However, a week later I'm worse than ever and can't breathe. I bought some more so we will see.
Omega 3's are anti-inflammatory so theortically they should help with mucsous since it is an inflammatory response.
best way to take steam inhalation at sleeping time.