July 27, 2016
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Ketek Patient Information including How Should I Take

What should I discuss with my healthcare provider before taking telithromycin (Ketek)?

You should not take this medication if you are allergic to telithromycin, or if you have:

  • myasthenia gravis;
  • if you are also taking cisapride (Propulsid) or pimozide (Orap);
  • if you have kidney or liver disease AND you are taking colchicine (Colcrys); or
  • if you have a history of liver problems caused by telithromycin or similar antibiotics such as erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin), azithromycin (Zithromax), clarithromycin (Biaxin), troleandomycin (TAO), or dirithromycin (Dynabac).

To make sure you can safely take telithromycin, tell your doctor if you have any of these other conditions:

  • kidney or liver disease;
  • low levels of potassium or magnesium in your blood;
  • heart disease or a heart rhythm disorder; or
  • a personal or family history of Long QT syndrome.

FDA pregnancy category C. It is not known whether telithromycin will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

It is not known whether telithromycin passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take telithromycin (Ketek)?

Take this medication exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.

Telithromycin can be taken with or without food.

Do not crush, chew, or break the telithromycin tablet. Swallow it whole.

Telithromycin is usually taken once a day. Follow your doctor's instructions. Try to take telithromycin at about the same time each day.

Take this medication for as many days as it has been prescribed for you even if you begin to feel better. Your symptoms may start to improve before the infection is completely treated. Telithromycin will not treat a viral infection such as the common cold or flu.

Store this medication at room temperature away from moisture and heat.

Side Effects Centers

Ketek - User Reviews

Ketek User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Ketek sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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