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What is Keflex?

Keflex (cephalexin) is an antibiotic medication used to treat infections caused by bacteria. This can include upper respiratory infections, ear infections, skin infections, urinary tract infections, and bone infections. Keflex works by fighting bacteria in your body and will not work to treat viral infections.

Always read the medication information and instructions before using this medication.
Always follow your doctor’s directions.

  • Take Keflex orally with or without food.
  • It is typically prescribed to be taken every six to twelve hours.
  • Keflex should be taken at evenly spaced times.
  • Continue taking this medication for the full prescribed amount of time, even if your symptoms have disappeared.


Make sure to tell your doctor:

  • If you have any drug or other allergies.
  • If you take any other prescription or over-the-counter medications.
  • Your medical history especially of liver disease, kidney disease, stomach disorder, intestinal disorder or diabetes.
  • If you are pregnant, planning on pregnancy or breastfeeding.

Side Effects of Keflex

Common side effects of Keflex:

  • Nausea, vomiting or diarrhea.
  • Stomach pain or indigestion.
  • Vaginal discharge or itching.

If you have any of the following cephalexin side effects, seek medical help:

  • Severe stomach pain.
  • Bloody or watery diarrhea even if occurs months after your final dose.
  • Unusual tiredness.
  • Shortness of breath.
  • Lightheadedness.
  • Easy bruising or bleeding.
  • Red or purple spots under your skin.
  • Cold hands or feet or pale skin.
  • Seizures.
  • Jaundice.
  • Painful or dark coloured urine.
  • Pain in your side or lower back.
  • Fever or weakness.
  • Symptoms of an allergic reaction including difficulty breathing, hives or swelling in your face, lips or throat.



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 generic alternative to Keflex?

Generic Keflex is known as cephalexin and is available in the same 250mg and 500mg strengths.

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April 15, 2023

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March 22, 2023

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A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.

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