The invention provides a formulation to be administered as dry powder for inhalation
suitable for efficacious delivery of active ingredients into the low respiratory
tract of patients suffering of pulmonary diseases such as asthma. In particular,
the invention provides a formulation to be administered as dry powder for inhalation
freely flowable, which can be produced in a simple way, physically and chemically
stable and able of delivering either accurate doses and high fine particle fraction
of low strength active ingredients by using a high- or medium resistance device.
