/b/veterinary-news/posts/veterinary-poisons-information-service-facing-closure-your-suggestions-invited It’s a complicated story, but the Veterinary Poisons Information Service is one of a number of services run by the Guy’s & St Thomas' Poisons Unit (GTPU), which exists primarily to provide 24 hour telephone poisons information to the NHS. Untilen-USTelligent Community 10