Both Zoloft and Effexor are antidepressant drugs used to treat social anxiety disorder and generalized anxiety disorder, in addition to depression. Although both drugs have been on the market for some time, it was just in 2006 that the U.S. Food and Drug Administration ("FDA") issued a warning of the dangers of taking Zoloft and Effexor combined with migraine medications such as Triptans. Taking these drugs together can result in a serious, life-threatening disorder known as Serotonin Syndrome, whose symptoms include hallucinations, increased heart rate, loss of coordination, increased body temperature, restlessness, and even coma. Furthermore, taking increased doses of Zoloft and Effexor, along with Triptans, can also result in an increased risk of Serotonin Syndrome. Since people suffered from Serotonin Syndrome long before the FDA issued its warning, the manufacturer of these antidepressant drugs may be liable for failing to warn consumers of a potentially deadly interaction with some migraine medications.