To ask the Secretary of State for Environment, Food and Rural Affairs what assessment his Department has made of the environmental impact on river dependent ecosystems of the large scale use of antiviral drugs. (110427)

The Environment Agency has recently reviewed its work programme on human pharmaceuticals, using updated data on their use and ecotoxicity, in order to prioritise future work. The findings of this review will be published in the spring, and will include a list of those human pharmaceuticals most likely to pose a risk to aquatic ecosystems.