"Several American visitors have reported experiencing excessive drowsiness, confusion, dizziness, and nausea after drinking alcohol in public areas such as hotel bars and night clubs in several cities throughout the Netherlands. These effects may be the result of unknowingly ingesting drugs, such as flunitrazepam (Rohypnol), hydroxybutyrate (GHB), triazolam (Halcion), scopolamine, burundaga, ketamine and more recently MDMA (Ecstacy), surreptitiously placed in drinks. These drugs do not have a distinctive color, smell, or flavor and come in powder, liquid and pill forms. Never leave your drink unattended and do not accept drinks from strangers. If you believe you have been drugged, seek assistance immediately. Try to keep the container your drink was in, and any amount that may be left, in order to assist the police with their investigation."