Seasonal allergies? Give this blend a try to see if it reduces your symptoms. While on an anti-allergy blend is it safe to take the Systemic Formulas' R-Lung blend to help keep your airways open. The FDA does not approve of these statements and you are taking this formulas at your own risk. You may have to take it for several days before relief is found depending on your current health status. Contains only herbs and no fillers. The manufacturer does not want me listing the ingredients on the website. You will see what is in it when you buy it. And if you are afraid that one of the herbs is not good for you you can add 4-10 capsules to a mud bath and soak the herbs through your skin.