Doctors think they have hit on a way to effectively double supplies of a drug that fights bird flu. Administering Tamiflu alongside a second drug that stops it being excreted in urine means that only half doses of the treatment would be needed. Tamiflu (oseltamivir phosphate) is the main antiflu medicine recommended by the World Health Organization (WHO). The WHO suggests that, in anticipation of a flu pandemic, countries should stockpile enough for at least a quarter of their population. But although Swiss drugmaker Roche, the sole supplier, has quadrupled its production capacity over the past two years, the current supply is thought to cover just 2% of the world population.
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