k Other drugs such as those under national but not international control may include substances such as gamma-butyrolactone (GBL), khat, piperazines (e.g. N-benzylpiperazine), tramadol and ketamine.
k Les autres drogues placées sous contrôle national mais non international peuvent comprendre les substances suivantes: gamma-butyrolactone (GBL), khat, pipérazines (par exemple N-benzylpipérazine), tramadol et kétamine.