Antibiotics Home > Cefzil Side Effects

It is possible for people who are taking Cefzil to develop side effects like nausea, diarrhea, or yeast infections. Some of these problems, specifically watery or bloody diarrhea, can occur even after treatment ends. Although most reactions to this antibiotic tend to be minor, there are also serious problems, such as seizures or unusual body movements, which require immediate medical treatment.


An Introduction to Side Effects of Cefzil

Just like any medicine, Cefzil® (cefprozil) can cause side effects. However, not everyone who takes the drug will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with Cefzil. Your healthcare provider can discuss a more complete list with you.)

Common Cefzil Side Effects

Cefzil has been studied extensively in clinical trials. In these studies, the possible side effects were carefully documented.
In these studies, the most common reactions to Cefzil included:
  • Nausea -- in up to 3.5 percent of people
  • Diarrhea -- up to 2.9 percent
  • Genital itching and vaginal infection or irritation (such as a yeast infection) -- up to 1.6 percent
  • Diaper rash -- up to 1.5 percent
  • Vomiting -- up to 1 percent
  • Abdominal (stomach) pain -- up to 1 percent
  • Dizziness -- up to 1 percent.
Various laboratory test abnormalities, such as high liver enzymes, have also been reported with this drug.

Side Effects to Report

Some Cefzil side effects are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
  • Signs of an overdose, such as:
    • Seizures
    • Coma
    • Unusual muscle movements or hyperactivity
  • Watery or bloody diarrhea, which may start while taking the drug or even quite a while after treatment ends
  • Signs of an allergic reaction, such as:
    • An unexplained rash
    • Itching
    • Hives
    • Redness of the face
    • Swelling of the mouth or throat
    • Wheezing
    • Difficulty breathing.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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