This blend is designed with the lungs in mind.  Mullein and hyssop are excellent expectorants  encouraging productive coughs. The relaxant and anti-spasm properties of the other constituents  are calming to aggravated lungs. This blend presents with peppermint, licorice, and chamomile flavors making this a pleasant tasting blend. Note - this is not medicine nor intended to treat any medical issues. Feedback from people with allergies is excellent.