Which category of drug increases alertness, changing a person's mood by increasing energy?

Question

Quizplus · Accepted Answer

Stimulants increase alertness and energy, and can also elevate mood. Examples include caffeine, nicotine, and amphetamines. Depressants, on the other hand, decrease alertness and energy and can produce a calming effect. Hallucinogens can alter perception and mood, but do not necessarily increase energy. Antidepressants are a class of medication used to treat depression and do not necessarily increase alertness or energy.

Which Category of Drug Increases Alertness, Changing a Person's Mood