I kliniske Busilvex- forsøg er der forekommet shocklunge - acute respiratory distress syndrome fulgt af respirationssvigt forbundet med interstitiel lungefibrose hos en patient, som afgik ved døden, om end det ikke var muligt at påvise en klar ætiologi.
4 Occurrence of acute respiratory distress syndrome with subsequent respiratory failure associated with interstitial pulmonary fibrosis was reported in Busilvex studies in one patient who died, although, no clear aetiology was identified.