Cephalexin: What Are The Possible Side Effects Of Cephalexin


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What are the possible side effects of cephalexin?


emt Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
emt Call your doctor at once if you have any of these serious side effects:
  • diarrhea that is watery or bloody;
  • seizure (convulsions);
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
  • pale or yellowed skin, dark colored urine, fever, confusion or weakness;
  • easy bruising or bleeding, unusual weakness;
  • confusion, agitation, hallucinations (seeing things that are not there); or
  • urinating less than usual or not at all.

Less serious side effects may include:

  • mild nausea, vomiting, diarrhea;
  • dizziness, tired feeling;
  • joint pain; or
  • vaginal itching or discharge.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.



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Last updated: April 22, 2008

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