Things You'll Need:
- Antihistamine
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Step 1
Recognize the symptoms that are common in people who are allergic to amoxicillin and other penicillin drugs. The Mayo Clinic lists symptoms that vary in degree, from a rash, hives and minor swelling of the lips, to more severe, life-threatening signs of anaphylaxis (see Resources). Anaphylaxis reactions include difficulty breathing from the throat closing up, a rapid heartbeat and dizziness.
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Step 2
Stop taking amoxicillin if you are experiencing any allergy symptoms, no matter how minor they may seem. If your infection is still present, call your doctor to get a prescription for another drug.
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Step 3
Treat the itching from hives or a rash by taking an over-the-counter antihistamine, such as Benadryl. Use the antihistamine as directed by your doctor or according to the packaging label.
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Step 4
Get immediate medical attention if you or a family member exhibits signs of an anaphylactic reaction that may be related to taking amoxicillin. Call your local emergency number or head directly to the emergency room of the closest hospital. In many cases, a shot of epinepherine helps to stop the allergic reaction.
