Methamphetamine (USAN) (play /ˌmɛθæmˈfɛtəmiːn/), also known as metamfetamine (INN),[2] meth, ice, speed, crystal, glass, tik, N-methylamphetamine, methylamphetamine, and desoxyephedrine, is a psychostimulant of the phenethylamine and amphetamine class of psychoactive drugs.
Fighters battle in Manhattan's Union Square during a massive pillow fight on April 2, 2011 in New York City. Over 130 cities worldwide are participating in the fourth annual International Pillow Fight Day. (Photo by Mario Tama/Getty Images)
Singer Shania Twain is honored with the 2442nd Star on the Hollywood Walk Of Fame on June 2, 2011 in Hollywood, California. (Photo by Jason Merritt/Getty Images)
The Royal Air Force Red Arrows perform the “Gypo Split” during their first public aerobatic display since the tragic death of Flt Lt Jon Egging on September 2, 2011 in Chatsworth, England. (Photo by Christopher Furlong/Getty Images)
Participants run through the flames in the 2011 Spartacus Challenge on October 2, 2011 in Wolverhamton, England. (Photo by Dean Mouhtaropoulos/Getty Images)
An Iranian woman without wearing her mandatory Islamic headscarf flashes a victory sign as two head-to-toe veiled women walk at the old main bazaar of Tehran, Iran, Thursday, June 13, 2024. (Photo by Vahid Salemi/AP Photo)
Sudan cheetah cub Assama inspects a camera bag in its enclosure at the Landau Zoo, in Landau, Germany, 03 September 2025. Assama, born in July as the only cub to a cheetah cat, was rejected by its mother, and is now being bottle-fed by its caretakers. (Photo by Ronald Wittek/EPA)