Table 13.2

 Neuraminidase inhibitors in the treatment of adults with community acquired influenza: summary of trial data

TreatmentPatients (% with proven influenza)Age range (mean)Duration of illnessReduction in days to alleviation of symptoms in patients with influenza (median)CommentsInvestigator
Inhaled zanamivir 10 mg bid for 5 days417 (63%)⩾13 years (32 years)⩽48 h1 (5 v 4)3 days reduction in patients treated ⩽30 hHayden et al (1997)22
3 (7 v 4 in febrile)
Inhaled zanamivir 10 mg bid for 5 days455 (71%)⩾12 years (37 years)<30 h and >30 h1.5 (6.5 v 5.0)Reduced complications and antibiotics (15% v 38%) in patients with underlying conditions. No effect in patients with symptoms >30 hMIST Study Group (1998)102
2.0 (6.5 v 4.5 in febrile)
Oseltamivir 75 mg or 150 mg bid for 5 days629 (60%)18–65 years⩽36 h1.4 (4.3 v 2.9 v 2.9)Reduced complicationsTreanor et al (2000)23
Oseltamivir 75 mg or 150 mg bid for 5 days719 (66%)18–65 years⩽36 h1.2–1.5 days (4.9 v 3.6 v 3.4)No difference between dosesNicholson et al (2000)101