Our daughter was using her inhaler for asthma multiple times a week during her allergy "seasons" until she began taking Nature's Way Reishi Standardized. She told me the other day that in the last several months she only needed her inhaler ONCE, and that was when she visited New Orleans and the climate/mold change was very significant. We are very grateful to iHerb.com for carrying such a wonderful product at a reasonable price! We've recommended it to family and suggest you try it too! The Watsons, TN