This is especially common among dark-web internet sales, festivals or club scenes, or sales to inexperienced customers unfamiliar with the experience and side effects of pure methamphetamine.

Mixing or replacing methamphetamine with less-expensive cutting agents or drugs allows dealers and producers to stretch their profits. This means any batch of methamphetamine may be cut, mixed, or faked with harmful agents or additives, including bath salts and the deadly opioid fentanyl.