
In a nested, case-control study published in the Archives of General Psychiatry, investigators observed that the use of selective serotonin-reuptake inhibitors (SSRIs) increased the risk of upper gastrointestinal (GI) tract bleeding; this increased risk was also observed with the serotonin and norepinephrine reuptake inhibitor (SNRI) venlafaxine. This risk may be increased when the agents are used concomitantly with nonsteroidal anti-inflammatory drugs (NSAIDs) and decreased when used concomitantly with acid-suppressing agents.