The very best expectorant I have used is called SSKI. It was THE major medicine used for lung problems prior to WWII, when the drug companies buried it because there was no money in it.
You can order it from Trapper here at the Curezone,
I make my own, 1 quart at a time ($150) using this recipe:
SSKI works so well that I was able to discontinue my asthma inhalers, SSKI keeps my asthma under control better than inhalers! Inhalers are insanely expensive.
Also see Asthma/Congested Lungs here: at 30mg per drop.
You should also take 200mcg selenium with SSKI for your thyroid. Iodine & selenium must always be taken together to prevent thyroid problems.
Best to you,