The scary part is none of the enhancer drugs sold today have gone through long enough time in testing. Just because the drug doesn't appear to have side effects after 1-2 years, it's not possible to know what will happen 10 years later especially if the drug is often taken for 10 years. Testing on animals can only tell you so much.

And then, the consumers who take the drug like an easy miracle drug. Just because it's said to have no known long team side effects, they take it at will and then become dependent on the drug because the body doesn't know how to function naturally. To the company who makes and sells the drug, the more addicted the consumers, the better it is for them. More money. Consumers don't care as long it works now and if anything goes wrong in a few years, sue the drug manufacturer.

Today's society is all about minimum amount of time and efforts to learn on your own. If there's an enhancer drug, take it to further reduce the time and efforts. Deal with withdraw and side effects later. If can't, sue the drug manufacturer.

I imagine its will have side effects just like any other drug that manipulates the balances in the brain. Once the brain notices an influx of specific chemicals, it stops producing them. Then when the influx is taken away, the brain must try and find its original balance....which it cant. Its a life long strugle of ups and downs.