Benadryl's active ingredient, diphenhydramine, is now considered outdated and unsafe, with researchers urging that it be removed from over-the-counter use The drug causes strong sedation, impaired memory, and slower reaction times, with studies showing it affects driving performance more than alcohol Older adults face lingering grogginess for up to 18 hours, while children risk unpredictable reactions, including agitation, coma, or heart problems if overdosed Other countries have already restricted access, and medical authorities warn against its use in children, highlighting safer alternatives and lifestyle strategies Natural approaches like vitamin C, quercetin, whole foods, restorative sleep, and stress management help balance histamine and reduce allergy symptoms without dangerous side effects

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