Depending on its form, methamphetamine can be swallowed, snorted or injected.
Smoking the purer, crystalline form of methamphetamine, known as crystal meth, produces a very intense high similar to that produced by crack cocaine but much longer lasting.
Sharing needles, syringes or other injecting equipment, runs the risk of the injector catching or spreading viruses, such as HIV or hepatitis C. There is also the risk that veins may be damaged, and of abscesses or clots developing.
How long the effects last and the drug stays in your system depends on how much you’ve taken, your size, whether you’ve eaten and what other drugs you may have also taken.
How long it lasts
The effects of methamphetamine can last a very long time.
Smoking the purer, crystalline form of methamphetamine, crystal meth, produces a very intense high similar to that produced by crack cocaine but is much longer lasting. The effects can last for a period of between 4 and 12 hours.
The comedown from methamphetamine is severe.
How long will it be detectable?
Crystal meth can report positive in a urine test for 1 to 4 days after using.
How long a drug can be detected for depends on how much is taken and which testing kit is used. This is only a general guide.