Time and meds: Most medication reactions will begin to improve within 48 hours after stopping the medication. To ease the symptoms of a drug allergic reaction, antihistamines such as zyrtec, Claritin (loratadine) or Allegra can help. On occasion oral steroids like Prednisone are needed. If the rash is blisters or progressing, then a doctor's visit is important for further evaluation and treatment.
Answered 6/30/2014
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