ICOS Corporation is a biotechnology company that engages in the discovery, development, and commercialization of therapeutic products. It is engaged in the commercialization of treatments for unmet medical conditions, such as benign prostatic hyperplasia, hypertension, pulmonary arterial hypertension, cancer, and inflammatory diseases. It is the developer of a treatment known as Cialis (tadalafil), a product for the treatment of erectile dysfunction through its joint venture with Eli Lilly and Company in North America and Europe.
It is also engaged in contract manufacturing services for third parties. It is in a strategic alliance with Solvay Pharmaceuticals, Inc.
ICOS Corporation was established in 1989, based in Bothell, Washington. It is currently operated by Eli Lilly and Company.