That analysis has shown no link to suicide or suicidal behavior, she said.

Suicide protective factors are things that reduce the potential for suicidal behavior.

Very rare cases of suicidal behavior have been reported to occur, sometimes after a single dose.

Over all, the analysis found no increased risk of suicidal behavior in adults over 30.

"Toward a clinical model of suicidal behavior in psychiatric patients."

But suicide and suicidal behavior are never normal responses to stress.

Genetics appears to account for between 38% and 55% of suicidal behaviors.

The drugs appeared to reduce the risk of suicidal behavior significantly in people 65 and over.

It said patients received at most one hour of individual therapy a week, while nearly four in five showed suicidal or self-destructive behavior.

Another case involved a boy who had been hospitalized three times because of suicidal behavior while he was being held in a juvenile detention center.