Methamphetamine is a powerful stimulant that quickly creates a state of euphoria similar to that provided by cocaine. However, the effects of methamphetamine are much longer, as they can last up to 12 hours depending on how they are consumed. Methamphetamine is a powder that can be swallowed, sniffed (inhaled through the nose), smoked or injected. It can also be in the form of crystals, which are usually smoked. Crystal methamphetamine is often referred to as “crystal meth” or “tina”. It is also known as “speed” or “meth” (the latter name is also applied to methadone, there is a possibility of confusion).