I've had hayfever for 18 years, and I believe this was related also to candida overgrowth. I've tried hayfever tablets, some worked, and some didn't, but I wasn't happy taking them.
Then after reading the reviews on oxygen elements max I decided to try it, and within 3 days I noticed a big difference. Usually I get problems as soon as the sun comes out in the summer, but using oxygen elements max, nothing. No nausea, sinusitis, summer cold or migraine! Really pleased with this product.