Considerations when treating influenza infections with oseltamivir
Chunping Gu1, Yi Chen2, Haobin Li3
1Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Expert Opinion on Pharmacotherapy
|July 12, 2024
Summary
Oseltamivir remains a key treatment for influenza, with ongoing research into its use, resistance, and management. Recent data shows fluctuating prescription trends and benefits in young children.
Area of Science:
- Pharmacology and virology
- Clinical pharmacy and therapeutics
- Epidemiology
Background:
- Influenza circulation is expected to increase post-pandemic social distancing.
- Oseltamivir is a primary treatment and preventative agent for influenza.
- This review synthesizes current knowledge on oseltamivir.
Purpose of the Study:
- To review updated evidence on oseltamivir's pharmacology.
- To examine oseltamivir resistance mechanisms and clinical management.
- To analyze real-world data on oseltamivir usage and efficacy.
Main Methods:
- Literature review of pharmacology, resistance, and clinical data.
- Analysis of real-world prescription trends.
- Evaluation of clinical outcomes in pediatric patients.
Main Results:
- Oseltamivir, a neuraminidase inhibitor, is effective but carries risks like neuropsychiatric events.
- Influenza A(H1N1)pdm09 resistance is linked to H275Y mutation, though most strains remain sensitive.
- Prescription data shows a decline in 2020 followed by recovery; young children (<6 years) showed shortest defervescence duration.
Conclusions:
- Oseltamivir is a vital influenza medication requiring careful management, especially regarding resistance and specific populations.
- Dose adjustments are crucial for pediatric patients with renal impairment.
- Real-world data supports oseltamivir's role, particularly highlighting its rapid effect in young children.
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