I used to have a lot of problems with PND that affected my voice and created various stomach problems. I tried many meds and finally my ENT doc told me to move. I was moving anyway and I thought I would get away from the PND, but no, it moved with me. I moved to NC where my allergies were worse and went to a "mountain doc" who gave me Quercetin.
It worked, no more PND, my voice came back, and no more stomach aches. I had forgot about it until I ran out of Quercetin and within two weeks the PND started and my voice disappeared. I got more and it cleared up. I ran out a third time and the same thing happened. Now I know the Quercetin works for me. I have found the cheapest Quercetin works as well as the expensive stuff.
Don