Methamphetamine is a synthetic drug that is produced in illicit laboratories using a variety of chemicals and precursor ingredients. The specific ingredients and methods used to produce methamphetamine can vary depending on the location and the sophistication of the operation.

As far as my knowledge cutoff date, April 2023, the two primary precursor chemicals used in methamphetamine production are ephedrine and pseudoephedrine. These chemicals are commonly found in over-the-counter cold and allergy medications, and they can be extracted and processed to produce methamphetamine.

Methamphetamine production typically involves a process of extraction, reduction, and purification, using a variety of chemicals and solvents. Some of the chemicals used in methamphetamine production can be highly toxic and can pose significant risks to the environment and public health.

Methamphetamine is commonly produced in illicit laboratories in many regions of the world, including North America, Southeast Asia, and parts of Europe. The production and distribution of methamphetamine is illegal in most countries worldwide due to its harmful effects on individuals and society.