The composition of this drug unique, very useful components are selected. I bought it, because here there is a part of quercetin, which helps to cope very well with allergies. But as preparations with quercetin is quite expensive for regular use, I found a more efficient and accessible means of allergies, which not only removes the symptoms, but also can fully help to get rid of various allergies and other diseases - this onion peel, it high content of quercetin . I brew a pinch of onion peel to clean boiling water cup, accept 2 - 3 times a day, as required, the result is much better than from dietary supplements with quercetin. Tablets are large and not very smooth, so it is difficult to swallow.