I purchased FSC Koltsov No. 19 for my husband, he works as a driver and is in traffic jams every day and breathes in car exhaust. He coughed a lot, I decided to take preventive measures to cleanse the lungs and bronchi. The result was the following: the cough disappeared and another very good result was the disappearance of snoring during sleep. This came as such a surprise to me that at first I didn’t understand what it was, it was so quiet, as if a child was sleeping. Holds FSC No. 19 in his hands, as soon as the channels open, he places it next to the pillow. For six months, we didn’t even immediately understand how such a result came about? Many thanks to the developers of FSC Koltsov!