I checked what could naturally do us good. I found that the old chicken soup is really heakthy and helps us thin the mucus.
check this out: healthnavigator.org.nz/keep...
I've also seen "Trust me I am a doctor" Vit D is in supplement and in moderation is a good steady supply. You can eat some oily fish too, but you won't know if you get a steady in put.
I shall keep to my supplement!