Nootropics are most commonly referred to as ‘smart drugs.’ Though the definition may have originally applied only to drugs that were used as brain health supplements, the term nootropic has now been expanded to include many different supplements that improve wellbeing and health. Because the definition of nootropic is so loosely defined, there is a fair amount of disagreement in regards to what, exactly, is considered a nootropic. Some drugs and supplements fit the definition in terms of effects, but are not generally recommended as nootropics due to their low safety profile.