Nootropic
Nootropics ( NOH-ə-TROH-piks, -TROP-iks; colloquially brain supplements, smart drugs, cognitive enhancers, memory enhancers, or brain boosters) are chemical substances which purportedly improve cognitive functions, such as attention, memory, wakefulness, and self-control. In the United States, nootropics can be over-the-counter drugs and are commonly advertised with unproven claims of effectiveness for improving cognition.