My husband and I have been using Tarblocks for over 4 years. We can't smoke without them on our cigarettes. Tarblock tips will definitely help you being winded and coughing if you smoke. I have been smoking over 30 years and I can walk two miles or more and not get winded. We are not ready to quit yet do to the fact there is not a good way to make it easy. Still working on this one. But with out a doubt if you smoke you need to use these. About 2 weeks you will definitely be able to tell the difference. Still want to quit though.