Most drugs, if not all, deplete nutrients (B12 critical for brain) your body needs. You would be much better off using something good for you to enhance brain:
1) Carlson Cod Liver Oil
2) Folixor (Sublingual) Place under tongue and let it dissolve
3) Phosphatidyl Choline Powder
4) E Gem Elite (Real Vit E by Carlson)
5) Tocotrienols (gives you more good Vit E to supplement one above)
6) Solar D Gems
Stop eating so much SUGAR. It is bad for brain and feeds cancer.
Ketogenic diet can starve cancer cells.http://www.prestigepublishing.com
(Learn how to get healthy so you don't need big pharmas drugs until they start caring about people instead of PROFITS. Just don't hold your breath it will ever happen.)
Also the term SMART should be a possible red flag. They are also saying SMART METERS, SMART GROWTH, all 21st century terminology that I am finding is NOT A GOOD THING.
Start eating better to feed your brain good stuff.
Always look at who FUNDS THESE STUDIES. If it is the DRUG MANF ITSELF, then you should suspect the results as they will always favor the new drug and be biased.