Methamphetamine hydrochloride, commonly known as crystal meth or simply meth, is a powerful central nervous system stimulant that affects the brain. It is a synthetic form of methamphetamine, which is chemically similar to amphetamine, a drug that is typically used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy.
The term "hydrochloride" refers to the salt form of methamphetamine, which is often seen when the drug is in its pure crystalline form. This substance is typically produced illegally and is known for its high potential for addiction and various harmful effects on physical and mental health.
Methamphetamine acts by increasing the levels of dopamine in the brain, leading to heightened feelings of pleasure and increased energy. However, its use can lead to severe side effects, including anxiety, insomnia, weight loss, dental problems ("meth mouth"), and increased risk of cardiovascular issues. Long-term use can result in significant psychological problems, including paranoia, hallucinations, and violent behavior.
Due to its high potential for abuse and addiction, methamphetamine is classified as a Schedule II controlled substance in many countries, meaning it is illegal to manufacture, distribute, or possess it without special permission. Its illegal production and use have significant social and health implications.