Amphetamines are stimulants that speed up the body’s system. Some are legally prescribed and used to treat attention-deficit hyperactivity disorder (ADHD).

White, crystalline powder derived from coca leaves. Cocaine base (crack) looks like small, irregularly shaped white rocks. Cocaine is an intense, euphoria-producing stimulant drug with strong addictive potential.

Khat is a flowering evergreen shrub that is abused for its stimulant-like effect. Khat has two active ingredients, cathine and cathinone.

Stimulants speed up the body’s systems. This class of drugs includes: Prescription drugs such as amphetamines [Adder- all® and Dexedrine®], methylphenidate [Concerta® and Ritalin®], diet aids [such as Didrex®, Bontril®, Preludin®, Fastin®, Adipex P®, Ionomin®, and Meridia®] and other illicitly used drugs such as methamphetamine, cocaine, methcathinone, and other synthetic...