I'm just putting this out there because it worked for me.
It sounds odd, but this is my second year of 90% reduced allergies, and I'm allergic to horse dander, most grasses, weeds, molds, broom, yada .....
I got introduced to Serrapeptase, which is an enzyme produced from silk worms, when a friend of mine fell off a cliff onto her knees. She said she was taking it because it digests scar tissue. Fair enough, both my husband and I have areas of scar tissue on us so I began taking it. At first I was taking 30K IU once or twice a day, and this was at the beginning of my allergy season (Mid April). It didn't seem to do anything. I read that due to serrapeptase not reacting to anything high doses were ok, so I did 90K to 120K -on an EMPTY stomach. In a week's time I noticed my allergies had almost disappeared.
That was two years ago. I don't normally take serrapeptase all year long, but begin in January or February. This year, I began to take it in march consistently just once a day, and right now, my allergies are 95% gone. I do have the odd sneeze or running nose - for a minute or two. But nothing compared to what I had.
My theory of how serrapeptase works for me is that it reduces inflammation in the small intestine. I might have food sensitivities but not food allergies. If this stuff can reduce the inflammation in the gut, then environmental stressors like pollen and dander don't push an already overloaded immune system further. I would not say there is scar tissue in my gut, but certainly it seems to reduce inflammation to such a degree I don't get allergies.
This is just worked for me, but maybe it will help someone else. Serrapeptase has been found beneficial for those with fibrosis in the lungs as it does digest and clear the scar tissue.