I bought this product because of the positive reviews. The first use is very difficult and you have to take good care otherwise you get a bottle of salt water directly into the throat. However, if one uses the part regularly can feel significant successes. My ENT is satisfied with the results and hopes that has unnecessary within a year the OP.
Incidentally, you can fill the bottle with various other preparations from drugstores and pharmacies. There is the possibility powder bars - the work just as well!