Which of the following substances is not classified as a depressant?

Cocaine is classified as a stimulant rather than a depressant. Stimulants increase alertness, attention, and energy by raising the levels of key neurotransmitters in the brain. In contrast, depressants, such as alcohol, sleeping pills, and tranquilizers, work by slowing down the body’s systems and create a calming effect, reducing anxiety and promoting sleep. Understanding the categories of drugs is important for safe driving, as depressants can impair coordination and reaction times, increasing the risk of accidents.