Conditions: Influenza
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 118
Healthy volunteers: no

Brief summary:
This partially randomized, multi-center parallel-group study will evaluate the safety, pharmacokinetics and the effect on viral load and viral shedding of Tamiflu (Oseltamivir) in patients with influenza. Adult and adolescent patients will be randomized to receive either 100 mg or 200 mg of study drug intravenously every 12 hours. Investigators and patients are blinded to knowledge of the assigned dose of Tamiflu. There is an option to convert to oral Tamiflu after 6 intravenous infusions. The anticipated time on study treatment is 5 days, with an optional treatment extension of a further 5 days, if necessary. There will be a non-randomized, open-label treatment group for patients with moderate/severe renal impairment or renal failure. Intravenous dose levels and frequency will be adjusted appropriately to their renal situation.

Detailed description:

Arms:
arm 1: Oseltamivir (TAMIFLU®) 100 mg intravenous (IV) infused over 2 hours, two times a day (every 12 hours) for 5 days. At the discretion of the investigator after 3 days of treatment (6 doses), participants could either continue IV treatment or switch to 75 mg oral oseltamivir twice daily to complete the 5 days of treatment. If necessary, after completing the 5 days of treatment, participants could receive additional treatment with study drug (IV or oral) for up to 5 days. arm 2: Oseltamivir (TAMIFLU®) 200 mg intravenous (IV) infused over 2 hours, two times a day (every 12 hours) for 5 days. At the discretion of the investigator after 3 days of treatment (6 doses), participants could either continue IV treatment or switch to 150 mg oral oseltamivir twice daily for 5 days. If necessary, after completing the 5 days of treatment, participants could receive additional treatment with study drug (IV or oral) for up to 5 days. arm 3: Moderate/Severe renal impaired participants received open label oseltamivir IV or oseltamivir capsules at reduced doses for 5 days as per protocol. If necessary, after completing the 5 days of treatment, participants could receive additional treatment with study drug as per protocol.

Interventions: intervention 1: Oseltamivir IV intervention 2: Oseltamivir Oral
Intervention descriptions: intervention 1: Oseltamivir IV infusions over 2 hours two times a day (every 12 hours) for 5 days for patients with moderate renal impairment. Patients with severe renal impairment received once daily dosing and patients on renal replacement therapy received dose/frequency according to protocol. intervention 2: Oseltamivir (TAMIFLU®) capsules taken orally for 5 days. Twice daily (every 12 hours) for patients with moderate renal impairment, once daily for patients with severe renal impairment and dose frequency according to protocol for patients on renal replacement therapy.

Protocol document: