For the information of anyone in this thread that heard that Clinton was making her employes look for an "Alzeimers drug", I can tell you this:

Provigil (modafinil) is a "smart drug" used to fight fatigue and is regularly prescribed to high achievers so that they can work for hours straight without getting tired or bored, but is primarily meant to help narcoleptics stay awake during the day.

The drug has far fewer side effects than other stimulants and has been compared to the fictional intelligence unlocking drug "NZT" from the movie (and since TV-series) "Limitless".

It would seem that Clinton was most likely either suffering from work related fatigue or she was looking for an edge over the competition in her field. There is, so far, no evidence that she actually has Alzeimers disease.