If you wish to use Oregano Tea in treating your asthma, according to the "Herbal Medicine Handbook" published by Springhouse, in Springhouse, PA copyright 2005, use one heaping teaspoon of dried oregano in a large cup...pour 8 ounces of boiling water into this and steep for 10 minutes. The tea may be sweetened with honey if you are not allergic. If you are taking iron supplements, separate taking your iron pill at least 2 hours before or after drinking this tea as the oregano may interfere with the absorption of the iron. It can also be used as a bath. Please read carefully. In a *large* pitcher or other heat-proof container, place 100 grams of oregano and pour in one liter of boiling water...(that's about 1/2 of one of those large platic pop bottles) and let it steep for 10 minutes. Add that to a your bath water and sit in the bath and breathe the steam. Do NOT have the water so hot you cannot sit in it. My final caution is if your asthma is really bad, don't wait for the oregano to clear it up. If you are having problems breathing, get yourself or whoever is having breathing problems to the nearest emergency room!