Methamphetamines, also known as "meth" or "crystal meth", is a highly addictive stimulant drug that can have serious physical and mental health consequences. There are many other terms that people may use to refer to methamphetamines, including "ice", "crank", "speed", "glass", "Tina", and "chalk". Some of these terms refer specifically to particular forms or methods of using the drug, while others are simply regional or slang variations. Regardless of the term used, it is important to understand the dangers of methamphetamines and seek professional help if needed to overcome addiction and regain health and wellbeing.