n [ U ]
a drug used for treating people who are depressed. It first became available in 1988 and many users claimed it increased their confidence and helped them in their daily lives. It soon became very popular for general use, especially in the US. In recent years some people have become worried about a possible link with suicide and violent behaviour. In 2004 authorities in the US decided that a warning must be given on packets of the drug that it can cause children to become suicidal (= to want to kill themselves).