CoTherix Enters Into Agreement With Quadrant Drug Delivery

April 5, 2005

CoTherix announced a collaborative research and development agreement with Quadrant Drug Delivery, Limited to develop an extended-release formulation of CoTherix's product, Ventavis (iloprost) Inhalation Solution. The goal of this initiative is to reduce the frequency and duration of dosing. Financial terms of the agreement were not disclosed. Ventavis is marketed by CoTherix in the U.S. for the treatment of pulmonary arterial hypertension (PAH) (World Health Organization Group I) in patients with NYHA Class III or IV symptoms.

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