Benadryl (diphenhydramine): While an uncommon cause of hives, it is possible you are allergic to marijuana. I see you already are on benadryl (diphenhydramine). This remains one of the best medicines for hives. Take more Benadryl (diphenhydramine) now. Vitamin c (1000 mg an hour) & b5 (500 mg 4x/day) & homeopathic remedies like urtica urens may help as well, but Benadryl (diphenhydramine) should do the trick! avoid exposure to cannabis in the future!
Answered 9/28/2016
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