I've loved this product for many, many years. I fight bronchitis and allergies for most of the year. When I start feeling like my breathing is "thick". I pop a couple of these every 4 - 6 hours for several days. Usually, I am coughing up mucus within an hour. When I stop coughing ... I stop taking the tablets. My lungs feel so much better and I can breathe more clearly. Awesome product. It works for me ... and I'm allergic to a great number of pharmaceutical products. I cannot guarantee that it will work for everyone. All body chemistry is different. But worth a try. They dissolve easily under your tongue and the taste is slightly sweet. Lactose base.