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Last Updated: 09/06/2026

Synairgen

South East England
Founded 2003
Inhaled interferon beta therapy for severe viral lung infections

Synairgen is a clinical-stage biopharmaceutical company developing an inhaled formulation of interferon beta as a broad-spectrum antiviral therapy for severe respiratory viral infections.

The approach stimulates the innate immune response directly in the lungs, targeting patients with severe viral pneumonia including those requiring mechanical ventilation.

A Phase 2 randomised controlled trial is currently enrolling patients across intensive care units in the UK, US, and Europe.