Crystal meth is the common name for crystal methamphetamine, a strong and highly addictive drug that affects the central nervous system. There is no legal use for it. Also called “ice” or. Methamphetamine is a lab-made (synthetic) stimulant with high addiction potential. When sold as shiny bluish-white rocks or crystals, it may be called “crystal meth,” “Tina,” or “ice.” Methamphetamine’s short-term effects typically include feelings of euphoria and increased alertness and energy. Methamphetamine (also known as meth or crystal meth) is a very addictive drug. Read about the signs of meth addiction and health problems it causes. Stimulant that speeds up body’s system that comes as pill or powder. Available in prescription as Desoxyn® to treat obesity and ADHD. Crystal meth resembles glass fragments and is an illegally altered version of the prescription drug that is cooked with over-the-counter drugs in meth labs. l-METH, a vasoconstrictor, is the active constituent of the Vicks Inhaler decongestant (Procter & Gamble, Cincinnati, OH), an over-the-counter product containing about 50 mg of the drug (Smith et al., 2014). Learn how meth is made, the chemicals involved, and the dangers of its production, including toxic fumes, environmental hazards, and legal consequences. Learn more about the short- and long-term effects associated with meth use, symptoms of meth addiction, and treatment options. Meth addiction is a dangerous problem in the United States. More than 16 million people have tried the highly addictive stimulant, and 2.1 million people reported using meth within the past year. Meth is one of the most commonly abused drugs in the world, especially in the American midwest. It affects chemicals in the brain and nerves that contribute to hyperactivity and impulse control. Methamphetamine is used to treat attention deficit hyperactivity disorder (ADHD). Methamphetamine is also to treat obesity in people who have not lost weight with diets or other treatments. Meth is a stimulant drug that can cause brief but intense euphoria and poses a high risk of addiction. Learn its effects and how to get treatment.