How Are Drug Allergies Treated?
The primary goal when treating an allergic drug reaction is symptom relief. Symptoms such as rash, hives, and itching can often be controlled with antihistamines, and occasionally corticosteroids.
For coughing and lung congestion, drugs called bronchodilators may be prescribed to widen the airways. For more serious anaphylactic symptoms -- life-threatening allergic reactions including difficulty breathing or loss of consciousness -- epinephrine may be given.
Source: http://www.webmd.com
