A simple, precise and rapid liquid chromatography-tandem mass spectrometry (LC-MS/MS) method has been developed and validated for the simultaneous determination of oseltamivir and oseltamivir carboxylate, a neuraminidase inhibitor, using their deuterated analogs as internal standards (ISs). The method involved solid phase extraction of the analytes and ISs from 200 μL human plasma with no recon...

Favipiravir (T-705 [6-fluoro-3-hydroxy-2-pyrazinecarboxamide]) and oseltamivir were combined to treat influenza virus A/NWS/33 (H1N1), A/Victoria/3/75 (H3N2), and A/Duck/MN/1525/81 (H5N1) infections. T-705 alone inhibited viruses in cell culture at 1.4 to 4.3 microM. Oseltamivir inhibited these three viruses in cells at 3.7, 0.02, and 0.16 microM and in neuraminidase assays at 0.94, 0.46, and 2...

A debate about the market-leading influenza antiviral medication, oseltamivir, which initially focused on treatment for generally mild illness, has been expanded to question the wisdom of stockpiling for use in future influenza pandemics. Although randomized controlled trial evidence confirms that oseltamivir will reduce symptom duration by 17-25 hours among otherwise healthy adolescents and ad...

BACKGROUND Oseltamivir dose reduction is recommended for patients with end-stage renal disease (ESRD). However, dosing recommendations are not available for treatment or prophylaxis of influenza in these patients. This study assessed the pharmacokinetics and tolerability of oseltamivir in ESRD patients undergoing maintenance haemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD...

The main antivirals employed to combat seasonal and pandemic influenza are oseltamivir and zanamivir which act by inhibiting the virus-encoded neuraminidase. These have to be deployed close to the time of infection and antiviral resistance to the more widely used oseltamivir has arisen relatively rapidly. Defective interfering (DI) influenza virus is a natural antiviral that works in a differen...

evaluating potential influenza virus inhibitors. However, the viral strains traditionally used in these models are fairly old and do not represent currently circulating viruses in nature. We developed two new lethal infection models in mice using mouse-adapted influenza A/New Caledonia/ 20/99 (H1N1) and influenza B/Sichuan/379/99 viruses. Both virus infections were used to study oral treatment ...

BACKGROUND Haematopoietic stem cell transplant (HSCT) and solid organ transplant (SOT) recipients are at high risk for severe influenza and its complications, and may not be adequately protected by vaccination. METHODS Liver, kidney, or liver-kidney transplant or allogeneic HSCT recipients aged ≥1 year were randomized to oseltamivir (75 mg once daily for those ≥13 years or weight-based dosing...

OBJECTIVES To evaluate the impact of oseltamivir prophylaxis in the management and control of influenza outbreaks in long-term care facilities in Alberta, Canada. SETTING AND PARTICIPANTS Long-term care facilities where 127 influenza outbreaks were reported to public health authorities in Alberta, Canada, during two influenza seasons from 2013 to 2015. DESIGN AND OUTCOME MEASURES Using rout...

BACKGROUND Data on the use of oseltamivir in infants is limited. We documented the clinical presentations of infants aged <12 months hospitalized with laboratory-confirmed influenza A in the southern hemisphere winter of 2009 and compared outcomes in relation to oseltamivir therapy. METHODS Data were extracted from prospectively collected and collated influenza case reports (June-September 20...

Corona Virus Disease 2019 (COVID-19) merupakan penyakit pernafasan yang disebabkan oleh virus corona jenis baru yaitu Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Salah satu obat digunakan selama masa pandemi adalah oseltamivir. penelitian ini dilakukan untuk mengetahui pola peresepan antivirus Oseltamivir berdasarkan umur, kelamin, dosis pemberian, lama frekuensi tunggal, raci...