Methamphetamine sold on the street (crystal meth) and the methamphetamine found in Desoxyn are essentially the same chemical substance. However, crystal meth contains many toxic substances as a result of its manufacture.
For instance, the manufacturing process for street meth often includes potentially harmful products, such as sulfur, battery acid, lithium, toluene, antifreeze, and other products that are supposed to be removed from meth when the drug is made. Very often, these substances are not completely removed from street meth.