The Trimbos Institute monitors the drug market in the Netherlands. They do this by, among other things, checking drugs from users for content. When substances are found in drugs that pose an acute danger to public health, such as contaminated XTC pills, or pills with an extremely high dose of MDMA, a Red Alert is started. At that time, health authorities and the media are informed. The public is informed by news messages, posters and flyers at parties. The purpose of a Red Alert is to inform as