Effexor XR (venlafaxine), a medication normally used to treat depression and anxiety, might have triggered acute allergic angioedema in an 81-year-old woman, a case study reports. Her symptoms, including tongue swelling, nausea, vomiting, and headaches, eased after she went off Effexor XR and was treated with diphenhydramine, an anti-allergy medication sold under the brand name Benadryl, among others. “To the best of our knowledge, this is the third reported case of angioedema associated with [Effexor…

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