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What is Keflex?

Keflex is a prescription medication that is used to treat bacterial infections. Keflex contains cephalexin and can be prescribed to treat infections including ear infections, urinary tract infections, bone infections, skin infections, and upper respiratory infections. Keflex works by fighting bacteria within your body.

Make sure to always read the patient information and instructions before using this medication. Always follow your doctor’s directions.

  • Keflex should only be used to treat conditions that have already been checked by your doctor.
  • Use Keflex for the full amount of time prescribed, even if your symptoms have improved.
  • Skipping doses of cephalexin may increase your risk of infection.
  • Do not share this medication with anyone else, even if they have similar symptoms.
  • Keflex may affect the result of medical tests. Tell all of your doctors that you take this medication.

Cautions

Tell your doctor and pharmacist:

  • About your drug and other allergies.
  • If you take any other prescription or over-the-counter medications
  • Your medical history particularly of liver disease, kidney disease, diabetes, stomach disorders, colitis or other intestinal disorders
  • If you are pregnant or planning pregnancy
  • If you are breast-feeding

You should also know:

  • Keflex will only work to treat bacterial infections and will not treat viral infections such as the flu.

Side Effects of Keflex

Common side effects of Keflex include but are not limited to:

  • Indigestion or stomach pain
  • Nausea or vomiting
  • Diarrhea
  • Vaginal discharge or itching

Get medical help if you have any of the following side effects of Keflex.

  • Seizures
  • Easier bruising or unusual bleeding
  • Unusual tiredness
  • Shortness of breath
  • Lightheadedness
  • Pale skin or cold hands and feet
  • Dark-colored urine
  • Painful urination
  • Pain in your side or lower back
  • Red or purple spots under your skin
  • Severe stomach pain
  • Watery or bloody diarrhea that occurs months after your final dose
  • Jaundice
  • Fever
  • Weakness
  • Symptoms of an allergic reaction such as difficulty breathing, hives or swelling in your face, lips or throat

FAQs

What should I do if I miss a dose of Keflex?

If you miss a dose of Keflex, you should take it as soon as you remember. However, if it is almost time for your next dose, then skip your missed dose.

What is the strength of Keflex?

Both Keflex and the generic alternative cephalexin are available in strengths of 250mg and 500mg.

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Some frequently asked questions
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