Most of the methamphetamine abused in the United States is manufactured in “superlabs” here or, more often, in Mexico. But the drug is also easily made in small clandestine laboratories, with relatively inexpensive over-the-counter ingredients such as pseudoephedrine, a common ingredient in cold medicines. To curb production of methamphetamine, pharmacies and other retail stores are required by law to keep logs of purchases of products containing pseudoephedrine; individuals may only purchase a limited amount of those products on a single day.
Methamphetamine production also involves a number of other, very hazardous chemicals. Toxicity from these chemicals can remain in the environment around a methamphetamine production lab long after the lab has been shut down, causing a wide range of health problems for people living in the area.