Research These Companies They should be on the trail. Company Development phase Name Mechanism Common Cold treatments Essential Therapeutics Preclinical MC-207044 Proteolytic enzyme inhibitor eXegenics Preclinical - Proteolytic enzyme inhibitor BioCryst Preclinical - RNA polymerase inhibitor Biota Preclinical BTA-188 Replication inhibitor Pfizer Phase II ruprintrivir Proteolytic enzyme inhibitor Sanofi- Synthelabo Pre-registration pleconaril Capsid inhibitor IL-8 antagonists Celltech Preclinical - IL-8 antagonist GlaxoSmithKline Preclinical SB-265610 IL-8 antagonist Dompe Preclinical repertaxin IL-8 antagonist Kosan Preclinical - IL-8 antagonist Abgenix Phase II ABX-IL8 IL-8 antagonist