Psych meds given to mentally healthy people?

This doesn't apply to me as psych meds usually do work at least a bit with me, and besides, I had a full medical before they diagnosed me with schizophrenia.
But if you were to give antipsychotics to a mentally healthy person (i.e. a person who has Wilson's disease can show psychotic symptoms, but is not mentally ill, Wilson's disease is due to a build-up of copper in the body), would the antipsychotics cause psychosis? I've heard this can happen.

No.

Generally speaking, if an otherwise healthy, non-psychotic person were to take anti-psychotic medication, they would not, themselves, experience any psychotic symptoms. The most likely scenario is that they would not experience any effect whatsoever.

Most anti-psychotics "work" by downregulating dopamine. Although slightly lowered dopamine levels can decrease psychotic symptoms in those with schizophrenia (those with schizophrenia have TOO MUCH available dopamine), slightly (and temporarily) decreased dopamine levels in an otherwise healthy person do not usually result in any particular symptoms at all. It is possible, however, for both schizophrenic and non schizophrenic people to suffer an irreversible symptom (due to LONG TERM use of antipsychotics) similar in nature to Parkinson's disease.

I have not heard this, but from what i have seen yes, my uncle is suffering from MS, multiple-schlerosis, so his mind is slowly disolving, they give him medication for seeing things, and it seems every time i go over there his dillusions get worse

It totally depends on the person and the way their body can react to different types of medications. I have adhd. If I drink alot of caffeine or take any kind of a stimulant, I quickly will become sleepy and more than likely fall asleep. This is not a typical reaction to a stimulant. Most people get jumpy and cant sleep. Im not saying that giving these types of meds to a healthy person is healthy by any means. I think it can be extremely dangerous! I believe that everyone should have a full medical work up as well as some tests and therapy before being put on any kind of mind altering medication. Themore info the better the chances of getting an appropriate diagnoses. This lessens the chances that a potentially hermful drug would be given to someone who doesnt need it!

I know they often give you hallucinations in cases of overdose, but I don't know what they'd do in healthy people.