I think nicotine is one of the very few components that can enhance some brain functions very slightly. It does however have far more negative side effects as i

I think nicotine is one of the very few components that can enhance some brain functions very slightly. It does however have far more negative side effects as its role in nature would suggest it would have. This is an exception and other common drugs like caffeine that do not have any positive effects at all. Or any other drug for that matter.