What about a "stupidity" pill?

There was a great quote from the movie "The Sixth Sense" that shortly after it came out was completely transformed/modified into an even better quote:

"I see stupid people. They're everywhere. They don't know they are stupid."

I was talking at lunch with some coworkers about large drug companies and the fact that they are heavily incented to find drugs to treat chronic diseases, since you have to regularly take the medicine, resulting in good ROI for the drug company. Chronic pain, obesity, etc.

So why not a drug to treat stupidity? It's a common illness. If you could just improve IQ by 10 points with a daily drug, wouldn't that be great? Of course, smart people would end up taking it, too, so I guess it would be more accurate to call it IQ booster or IQ vitamin, rather than a stupidity pill.

But what would it feel like to be 10 IQ points smarter? Would everything suddenly get easier? Would everything be instantly boring? Could you even tell?

I think there's a lot of money waiting to be made here, but by somebody much smarter than me.