It also goes by the street names tik, glass, and ice. Taken by users for its euphoric high, it is ten times more addictive than speed.
Methamphetamine was synthesised for the first time in 1893 by Japanese chemist Nagai Nagayoshi. Crystallised methamphetamine was later developed by pharmacologist Akira Ogata.
It was given to Allied bomber pilots during the Second World War to sustain them by fighting off fatigue and enhancing focus during long flights. The experiment failed because soldiers became agitated, could not channel their aggression and showed impaired judgment.
It has been made famous most recently in the television series Breaking Bad, about a high school chemistry teacher who turns to manufacturing crystal meth to pay for his cancer treatment.