Methamphetamine, also known as meth, is a synthetic drug that is not found naturally in nature. The drug is typically produced in clandestine laboratories using a combination of precursor chemicals, some of which are legal and some are not.

The primary precursor chemicals used in the illegal production of methamphetamine are ephedrine or pseudoephedrine, which can be found in some over-the-counter medications for colds and flu. Other chemicals used in the production of methamphetamine include anhydrous ammonia, lithium, iodine, and hydrochloric acid.

Illicit methamphetamine production often takes place in clandestine laboratories that are makeshift and highly dangerous. The production process requires specialized equipment and knowledge, and the risk of fire, explosion, and exposure to hazardous chemicals is significant.

Due to its highly addictive and harmful effects, the use and production of methamphetamine is illegal in most countries, and law enforcement agencies work to shut down clandestine laboratories and reduce the availability of the drug on the streets.