Hello, Mr. Hasman, Streptokill is distributed directly as it comes to us from the factory, so you will always receive the most recently distributed batch in the Czech Republic. From us, that is from the official streptokill.cz e-shop, supplied directly from the factory, you should never receive a batch with an earlier expiration than in one year. Furthermore, I can assure you that we have tested the long-term storage of Streptokill in extreme conditions, specifically in storage spaces under the dashboard of a car, where it was exposed to temperatures between -10 and +40C for more than a year, even in an already opened package, without it having a clear influence on its properties. Another fact is that even a healthy person with healthy and 100% functional tonsils, if he does not live in the Canadian wilderness or in a tonsils on Lanzarote, but moves in normal society, is exposed to frequent attacks of pathogens, which willy-nilly cause occasional inappropriate sensations in the throat . This is completely natural, and it is also exactly the moment when we recommend using Streptokill, because it is impossible to predict whether this feeling would develop into angina or whether it is just a weak virus or even a false impression. If we take into account other uses, e.g. for disinfection of bites, etc., it is unlikely that an open package of Streptokill would not be used up within a year. Thank you for your trust and we wish you a merry Christmas, Pavel Soukup, STREPTOkill.cz