Years ago I was given the dry leaf of Kumuarahou to drink as a tea, with wonderful results for clearing mucus and congestion. When I came across the 'Chest Clear' and saw that it was an ingredient I just had to purchase it and give it a try. Yesterday I took my first dose and today I feel so much better, I have noticed an improvement in the sinus, throat, and chest, enabling me to breathe so much better. Not great tasting but neither was the tea, a small price to pay for wonderful results. As I have COPD, this has been beneficial for me.