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How soon would a penicillin allergy appear?

Does anyone know how soon a penicillin allergy would appear? Especially an anaphalaxis one?

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Asked by Anonymous at 10:51 PM on Dec. 23, 2008 in Toddlers (1-2)

Answers (1)
  • depends on how the dosage was taken, pill, liquid, shot? my son had a shot of fentanyl and almost immediatly broke out into a huge rash of hives.. i think it depends on how fast it hits the blood stream. call poison control center, they might know. also your local EMT station, they are always awesome and helpful and willing to answer any question, even late at night. you can even go up to one and have them check someone out if you ever need them to. At least the ones in florida are!!! -

    Answer by sweetsorrow2 at 11:48 PM on Dec. 23, 2008

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