Quercetin dihydrate powder to protect and tone the lungs and sinuses. I have taken up to a level measuring teaspoon which is about 2 grams per day. Now I just take a quarter level teaspoon per day, which is about 250 mg.
Quercetin gives good energy. Taking quercetin restored my lungs and sinuses from just average, to good condition in 2016.
Then in 2021, only 1.87% ivermectin horse paste, apple flavored, restored my lungs from the Covid situation. I had to intentionally cough up lung mucous for about 12 days in addition to taking the ivermectin, to finally get my lungs clear.
I tried stopping taking quercetin twice in 2016, but I had so much less energy and less healthy sinuses, that I had to make quercetin a permanent supplement of mine.
For thinning and liquefying lung and sinus mucous, I take 1/2 slightly rounded measuring teaspoon per day of the 14 herb seasoning, Dash Table Blend from Walmart in the spice aisle in the 6.75 oz bottle.
Subtly increasing lung volume and blood oxygen can happen by eating high-RNA supplements like nutritional yeast (1/8 level cup before lunch) or supplements like marine phytoplankton (1/2 slightly rounded measuring teaspoon or more per day). I prefer taking the yeast before lunch because I assume it takes extra oxygen for the body to process lunch.
To me, the lungs can be as difficult to maintain as the digestive tract is to have functioning properly.