2 yrs ago I was stung by a red wasp and had an allergic reaction, treatment was 25mg benedryl and a steroid. Last year was stung again but by a yellow jacket same deal, went to ER due to signs of allergic reaction and was given 25mg benedryl and steroid. If I get stung again, would an ER visit be required if I immediately take 25 or 50mg of benedryl? I am 45, healthy, eat quite well, exercise regularly yet a little overweight. BP is 110/70 and pulse is 42 (those are normal numbers for me on any given day)