Methamphetamine is a highly addictive and potent drug, and its use is prevalent in many countries worldwide. The popularity of methamphetamine can vary depending on a variety of factors, including availability, price, cultural attitudes, and law enforcement efforts.

As far as my knowledge cutoff date, April 2023, some of the countries where methamphetamine use is most prevalent include the United States, Mexico, Thailand, and Australia. In these countries, methamphetamine is often produced locally or imported through illicit drug trafficking networks.

It is important to note that the use of methamphetamine can have significant physical and mental health consequences, including addiction, psychosis, and organ damage. In addition, the illegal production and distribution of methamphetamine can have significant consequences for public health and safety, including addiction, overdose, and violent crime. It is important to seek help and support if you or someone you know is struggling with methamphetamine addiction.