Thai authorities have denounced methamphetamine production, trafficking, and consumption as a threat to national security.

The growth in methamphetamine production and distribution poses new problems for law-enforcement officials.

A prescription is not required; the change has been made in an effort to reduce methamphetamine production.

Officials said it was also the first time that the authorities had relied heavily on wiretaps to focus on methamphetamine production and distribution.

The region has also been noted as a center of methamphetamine production.

Many police departments have specialized task forces with training to respond to cases of methamphetamine production.

The penalties for methamphetamine production are high.

Limited but increasing methamphetamine production occurs in eastern states.

The counties further detailed on the map are identified through law enforcement reporting as areas of high or consistent levels of methamphetamine production.

Anhydrous ammonia, which also is used in methamphetamine production, often is more difficult to acquire.