It's like a natural antibiotic. I got a kidney infection & started taking activated quercetin. 3 days later I started feeling better. A week later I'm back to myself, very little pain & able to do whatever I want again. I'll be on it for a while yet, takes time to heal up naturally from something so bad, but I'm very happy with this product.
Histamine intolerance and allergies
I started taking quercetin to help relieve histamine intolerance. This year, I started taking it when allergy season started and it brought more relief than any otc antihistamine and no side effects.