Foruden lokale virkninger, der forekommer som resultat af indtagelse af iloprost ved inhalation, er bivirkninger fra iloprost som f. eks. øget hoste, relateret til de farmakologiske egenskaber af prostacycliner.
In addition to local effects resulting from administration of iloprost by inhalation such as increased cough, adverse reactions with iloprost are related to the pharmacological properties of prostacyclins.