What is the reality? There is limited evidence that nootropics improve cognition. And some can cause side effects or interact with medicines you’re already taking.
In addition, what appears on the package label may not reflect what is inside unless the supplement has been verified by a group such as U.S. Pharmacopoeia There can be huge variability among manufacturers, said Gary W. Small, M.D., director of the UCLA Longevity Center.
It is legal for doctors to prescribe smart medications for uses that were not approved by the Food and Drug Administration (FDA). However, these do not help improve cognition at all, and may worsen it in some, according to the American Academy of Neurology.