What is keflex 500 mg used for

Do not take extra medicine to make up the missed dose. What happens if I overdose? Seek emergency medical attention or call the Poison Help line at Overdose symptoms may include nausea, vomiting, stomach pain, diarrhea, and blood in your urine. What should I avoid while taking cephalexin?

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to. Altered Laboratory Tests Prolonged prothrombin time, increased blood urea nitrogen BUN , increased creatinine, elevated alkaline phosphatase, elevated bilirubin, elevated lactate dehydrogenase LDH , pancytopenia , leukopenia , and agranulocytosis.

Interaction With Laboratory Or Diagnostic Testing A false-positive reaction may occur when testing for the presence of glucose in the urine using Benedict's solution or Fehling's solution.

Before therapy with KEFLEX is instituted, inquire whether the patient has a history of hypersensitivity reactions to cephalexin, cephalosporins, penicillins, or other drugs. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. Hypertoxin-producing strains of C. CDAD must be considered in all patients who present with diarrhea following antibiotic use.

Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents. If you are allergic to penicillins, you should also inform your doctor. Babies that are less than one month should not take this medication. Other considerations are if you are expecting a baby, breastfeeding or you have kidney disease.

Cephalexin is also known to interfere with certain lab tests, such as liver function studies and even renal function studies. Typical adult doses of cephalexin are mg every 6 hours, or mg every 12 hours. The usual dose for a child is 25 to 50 milligrams mg per kilogram of weight, given in divided doses.

Keflex capsules come in , , , and mg options. Doses may be doubled for more severe infections. Depending on the type of infection, treatment may last from 7 to 14 days.

If very large doses of cephalexin are needed, another type of cephalosporin that can be given by injection or an intravenous infusion may be used. Here are some general rules for taking cephalexin: Take it with food or milk to prevent an upset stomach. Senior dosage ages 65 years and older The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly.

As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. Your doctor may start you on a lowered dose or a different dosing schedule.

This can help keep levels of this drug from building up too much in your body.

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