I have used this product for many years for my family and myself. It is the best herbal product for lung, throat and sinus congestion issues that I have used. It really helps to break up and loosen the mucous so that it can drain or be coughed up. I have given many bottles to friends and coworkers when they had these issues and they were very satisfied with the results. Now they buy their own bottles. This is how much I believe in this product.