CrawlingPossum

Drug descriptions, e.g. for prozac, adderall, cocaine etc, talk about how the substance increases the level of some substances in the brain. Let's say adderall and cocaine, I think, increase levels of dopamine. Presumably this has good sides to it, but let's say in the case of big cocaine doses apparently it's bad what with loss of receptors etc. Well, so I was wondering, is it possible to implement a drug treatment based on actual measured dopamine level in the brain so that the dopamine level is increased to where we want it to be (presumably some sort of "healthy" level observed in "normal" people) but no further? Well, and I guess a simpler question would be, can we even actually measure these dopamine levels in the first place for cheap? For that matter, how do we even know what happens to dopamine levels from this or that treatment? How is this stuff measured?