so there is stuff to make you see things, and other stuff that makes you stupid, also things to make you energised. Is there anything that helps you think, like for a test, or remebering lost things ect. Best example I can think of is how ritlen helps adhd kids focus in a class ect.
catnip tea gives great mental focus and mellows you out, use catnip buds maybe an extract would have some real potential
look i dunno about that suggestion, but as for ritalin helping adhd kids, it can also help ppl without any diagnosed problem. some people take speed to study harder and work faster. but it doesnt work for everyone. I for one could not concentrate on school related work in highschool if i took ritalin or speed. i just wanted to play games and talk and stuff, where i have greater control over the domain. some people can work well under mild opiate inebriation. but the thing is, the clearest mind is probably going to end up being the sober mind. it represents the brain state that has allowed man to come this far, and thus it perhaps follows that this state has been honed through evolution to be the sharpest. the great thoughts that come from drugs are not about clear headedness in the realm of utilising knowlege, but in a sense, in the realm of developing a personal knowlege of things. creativity, epiphonies, mindly connections, these are moments where we realise something that we had not been shown before. the clarity that the OP talks of concerns an accurate, assertive mind that can retrieve memories in appropriate complexity, and can calculate with whatever existing means. i personally think that the average person without any negative mental issues is in their sharpest hour when sober. however people report being aided by all number of drugs, such as amphetamines, opiates, alcohol. one thing to remember is that only a mild dose is being referred to.