Oseltamivir for pandemic influenza preparation: Maximizing the use of an existing stockpile.

With the threat of significant morbidity and mortality following an influenza pandemic, stockpiling of antiviral agents such as oseltamivir is recommended. Shelf-life extension was explored to maximize use of an existing stockpile. This analysis demonstrated that oseltamivir retains potency defined by United States Pharmacopeia acceptance criteria beyond the labeled expiration date.