A pharmaceutical or veterinary composition, comprises a first active agent
selected from a dehydroepiandrosterone and/or dehydroepiandrosterone-sulf-
ate, or a salt thereof, and a second active agent comprising a leukotriene
receptor antagonist for the treatment of asthma, chronic obstructive
pulmonary disease, or other respiratory diseases. The composition is
provided in various formulations and in the form of a kit. The products
of this patent are applied to the prophylaxis and treatment of asthma,
chronic obstructive pulmonary disease, or other respiratory diseases.