A deadly social media trend is back: Teens overdosing on everyday allergy medicine amid a sharp rise in poisonings and fatalities.The “Benadryl Challenge”—in which young people deliberately take large amounts of the common over-the-counter antihistamine diphenhydramine to induce hallucinations—has resurfaced with tragic consequences in 2026. What began as a viral TikTok phenomenon around 2020 is …
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