bupropion

Since 2003, L.A. County has seen approximately 50 suicides that involved bupropion as a cause of death.

There were about 20 other deaths from bupropion that were ruled as accidental drug overdoses.

Bupropion is medication commonly prescribed for depression.

At some point, the FDA required black-box warnings for anti-depressants because of the apparently increased risk of suicidal ideation, particularly in younger people.

https://en.wikipedia.org/wiki/Antidepressants_and_suicide_risk