Anyone know of any chemicals that block dopamine or serotonin (like the way caffeine blocks melatonin). Engineer here trying to make a machine that identifies someone and follows them until they relinquish their will to live. The purpose of the machine is to follow them unrelenting and eventually kill the person, but only when they allow the machine to do so. I imagine that I will be the first subject of this, and it will probably kill me, so I need to make it as self-sustaining and indestructible as possible. I’m thinking of using some radioactive isotope thermoelectric generator, if I can get my hands on enough Americium or possibly uranium