Amoxicillin Allergy Side Effects

Updated April 17, 2017

Amoxicillin is an antibiotic in the penicillin family, mainly used in the treatment of bacteria-borne illnesses. Amoxicillin kills bacteria and prevents its regrowth in other areas of the body. This versatile antibiotic treats a wide range of illnesses, from ear and bladder infections to pneumonia and E.coli, but does have potential side effects. Any allergic reaction to amoxicillin is serious and requires prompt treatment to avoid further illness or complications.

Amoxicillin and Allergies

Tell your doctor if you already suffer from any type of penicillin allergy, as well as any allergies to cephalosporin drugs such as Ceftin, Keflex, Duricef or Ceclor. Report any existing allergies to animals, dyes, foods and preservatives. Patients undergoing treatment for kidney or liver diseases and blood or clotting disorders may not be able to tolerate amoxicillin. And be sure to tell your doctor if you are allergic to any kinds of foods or substances.

Amoxicillin Side Effect Symptoms

Amoxicillin has multiple side effects that are considered types of allergic reactions to the medication. These include but are not limited to diarrhoea, sore throat and low grade fever accompanied by chills. Nausea, loss of appetite or jaundice indicate other negative effects of the medication.

Additional Amoxicillin Allergy Symptoms

In some cases, especially among the elderly, amoxicillin may cause severe reactions, such as diarrhoea, which can lead to dehydration and kidney failure. Because of age-related kidney function issues, elderly patients taking amoxicillin should be closely watched for reactions. Drug interactions with amoxicillin may also prompt adverse reactions or complications, such as rash, swelling of facial features, especially the lips and tongue, swelling of airway passages or food-related interactions that cause rashes, hives or intense itching.

More Symptoms

Watch for any signs of shortness of breath, a hoarse voice or any difficulty breathing. In some individuals, difficulty swallowing is also an indication that air passages are narrowing due to allergic reaction to a medication. Watch for swelling of hands, fingers and the tongue as well as eyelids and lips. If you notice such changes, get the individual to a hospital emergency department as soon as possible, as these are signs of anaphylaxis, which can be life-threatening.

Amoxicillin Dos and Don'ts

Take all medications as they are prescribed by your doctor. Never self-medicate. This drug may be taken with food or without, but to help prevent stomach upset, take with food when directed to do so by your doctor. Don't crush or break the extended relief tablets, but take them whole to prevent too much of the medication to be released at one time. If you miss a dose, take the dose as soon as you remember. But if you're close to your next scheduled dose, skip taking the missed dose and continue as usual.

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About the Author

Denise Stern is an experienced freelance writer and editor. She has written professionally for more than seven years. Stern regularly provides content for health-related and elder-care websites and has an associate and specialized business degree in health information management and technology.