Dry powder inhaler containing fluticasone propionate and salmeterol xinafoate

摘要

The present invention is a dry powder inhaler comprising a dry powder medicament comprising fluticasone propionate, salmeterol xinafoate and a lactose carrier, wherein the dose delivered per actuation of fluticasone propionate is less than 100 μg; The dose provides a baseline corrected FEV1 of greater than 150 mL in the patient within 30 minutes of receiving the dose. A method of treating a patient comprises administering to a patient a dry powder drug having fluticasone propionate, salmeterol xinafoate and a lactose carrier, wherein the dose delivered per actuation of fluticasone propionate is less than 100 μg The dose provides a baseline corrected FEV1 of greater than 150 mL in the patient within 30 minutes of receiving the dose.