The pharmaceutical companies do warn of severe psychological disturbance side effects under their "rare but serious" side effects warnings. Hallucinations, psychotic episodes and suicidal thoughts are listed as possibilities on many of these medications. I have seen no warnings against homicidal thoughts, only suicidal ones. But there may be legal reasons for that. Or maybe nobody has ever reported homicidal thoughts as a side effect. Or maybe those thoughts got reported under the less-scary heading of "unusual aggression".
There is the confounder that people with violent thoughts are more likely to be put on these drugs in the first place. And there is also the confounder that it can be hard to sort out actual side effects from the drug simply not working to suppress thoughts or actions that would have been there. But since the drug companies do admit that aggressive and/or disturbed thoughts can be actual (but rare) side effects, this is something that should be taken seriously, not just scoffed at.
http://www.drugs.com/sfx/prozac-side-effects.html
Quote:
Psychiatric side effects including hypomania, mania, transient psychosis, development of obsessive-compulsive symptoms, paranoid reaction, delusions, agitation, and a depersonalization syndrome have been reported. A number of reports have suggested that fluoxetine may be associated with the development of suicidal ideation. However, a meta-analysis of controlled studies has suggested that such an association may not exist. A retrospective study of suicidal ideation in 294 patients treated with fluoxetine for depression compared to other patients treated with a variety of therapeutic agents for depression has also suggested that an association between fluoxetine and increased risk of suicidal ideation may not exist.
Those side effects are rare (if they were common, Prozac would be off the market), but they do exist. I suspect that this possibility doesn't get strongly researched for legal reasons.
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