Trying to be fair :-)
My doctor told me my chronic catarrh was due to sinus problems, so I decided to try this. It hasn't helped at all. However, I don't want to condemn it because if what I have is due to allergies, then maybe this was the wrong thing to try. ..and I'm the one at fault, not the Sinus Nutrient. I suppose as with all things, some will work brilliantly for one patient and fail another - this is even true of conventional medicine.
Anything is worth a try if you're suffering !