Treatment for Suicide and Suicide Attempts
American Foundation for Suicide Prevention
"At this time, there is only one medication, clozapine, approved by the FDA for suicide risk reduction in patients with schizophrenia. There is one study of mood disorder patients that shows that treatment with antidepressants, atypical antipsychotics, and lithium reduced death by suicide. There are meta-analyses of small lithium studies that show that suicide is reduced in patients with either bipolar disorder or major depression taking lithium, but those findings are controversial.
There are two proven psychotherapies for treating those who attempt suicide: cognitive behavior therapy for suicide attempters (CBT for suicide attempters) and dialectical behavioral therapy (DBT) for patients with borderline personality disorder and recurrent suicidal ideation and behaviors. Clearly theses short term interactive therapies make a difference."
This web page from The American Society for Suicide Prevention describes some disorders that are common in suicidal individuals and some treatments for disorders.