Where can I find some nootropics?

With some nootropics the effects are subtle and gradual, such as with most nerve growth inducers, and may take weeks or even months before any cognitive improvement is noticed. At the other end of the spectrum are nootropics which have effects that are immediate, profound, and obvious. While scientific studies support some of the claimed benefits it is alleged that certain nootropic substances provide, It is worth noting that many of the claims attributed to a variety of nootropics have not been formally tested. Citations are provided in the article where information is available.