Levofloxacin

Why this is used

Levofloxacin is used to treat certain infections such as pneumonia chronic bronchitis and sinus, urinary tract, kidney, prostate (a male reproductive gland), and skin infections. Levofloxacin is also used to prevent anthrax (a serious infection that may be spread on purpose as part of a bioterror attack) in people who may have been exposed to anthrax germs in the air. Levofloxacin is in a class of antibiotics called fluoroquinolones. It works by killing bacteria that cause infections. Antibiotics will not work for colds, flu, or other viral infections.

How to take it

Levofloxacin comes as a tablet and a solution (liquid) to take by mouth. It is usually taken once a day. The length of your treatment depends on the type of infection you have. Your doctor will tell you how long to take levofloxacin. The tablet may be taken with or without food. The solution should be taken 1 hour before or 2 hours after eating. Take levofloxacin at around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take levofloxacin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. You should begin to feel better during the first few days of treatment with levofloxacin. If your symptoms do not improve or if they get worse, call your doctor. Take levofloxacin until you finish the prescription, even if you feel better. Do not stop taking levofloxacin unless you experience the symptoms of tendinitis or tendon rupture described in the IMPORTANT WARNING section or the symptoms of allergic reaction described in the SIDE EFFECTS section. If you stop taking levofloxacin too soon or skip doses, your infection may not be completely treated and the bacteria may become resistant to antibiotics.

Side effects

<p></p> <p></p> <p></p> <p>Levofloxacin may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

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nausea</li>
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vomiting</li>
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diarrhea</li>
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stomach pain</li>
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constipation</li>
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heartburn</li>
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headache</li>
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vaginal itching and/or discharge</li></ul></p> <p></p> <p>Some side effects can be serious. If you experience any of these symptoms, or those mentioned in the IMPORTANT WARNING section, stop taking levofloxacin, and call your doctor immediately:

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severe diarrhea (watery or bloody stools) that may occur with or without fever and stomach cramps (may occur up to 2 months or more after your treatment)</li>
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skin rash or blisters</li>
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itching</li>
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hives</li>
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tingling or swelling of the face, neck, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs</li>
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difficulty breathing or swallowing</li>
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hoarseness or throat tightness</li>
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fainting</li>
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rapid, irregular, or pounding heartbeat</li>
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chest pain</li>
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joint or muscle pain</li>
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fever</li>
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unusual bruising or bleeding</li>
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extreme tiredness</li>
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lack of energy</li>
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loss of appetite</li>
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pain in the upper right part of the stomach</li>
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yellowing of the skin or eyes</li>
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dark urine</li>
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pale stools</li>
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flu-like symptoms</li>
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seizures</li>
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dizziness</li>
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confusion</li>
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nervousness</li>
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restlessness</li>
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anxiety</li>
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not trusting others or feeling that others want to hurt you</li>
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difficulty falling asleep or staying asleep</li>
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nightmares or abnormal dreams</li>
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hallucinations (seeing things or hearing voices that do not exist)</li>
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depression</li>
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thoughts about dying or killing yourself</li>
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uncontrollable shaking of a part of the body</li>
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pain, burning, tingling, numbness, and/or weakness in a part of the body</li></ul>Levofloxacin may cause problems with bones, joints, and tissues around joints in children. Levofloxacin should not normally be given to children younger than 18 years of age unless they have been exposed to anthrax in the air. If your doctor prescribes levofloxacin for your child, be sure to tell the doctor if your child has or has ever had joint-related problems. Call your doctor if your child develops joint problems, such as pain or swelling, while taking levofloxacin or after treatment with levofloxacin. Talk to your child's doctor about the risks of giving levofloxacin to your child.Levofloxacin may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>

Precautions

Before taking levofloxacin, tell your doctor and pharmacist if you are allergic or have had a severe reaction to levofloxacin; any other quinolone or fluoroquinolone antibiotic such as ciprofloxacin (Cipro), gatifloxacin (Tequin) (not available in the U.S.), gemifloxacin (Factive), lomefloxacin (Maxaquin) (not available in the U.S.), moxifloxacin (Avelox), nalidixic acid (NegGram), norfloxacin (Noroxin), ofloxacin (Floxin), and sparfloxacin (Zagam) (not available in the U.S.): or any other medications, or if you are allergic to any of the ingredients in levofloxacin tablets or solution. Ask your pharmacist or check the Medication Guide for a list of the ingredients. tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention the medications listed in the IMPORTANT WARNING section and any of the following: anticoagulants ('blood thinners') such as warfarin (Coumadin, Jantoven); certain antidepressants; antipsychotics (medications to treat mental illness); cyclosporine (Gengraf, Neoral, Sandimmune); diuretics ('water pills'); insulin; oral medications for diabetes such as glyburide (DiaBeta, in Glucovance, Micronase, others); certain medications for irregular heartbeat such as amiodarone (Cordarone), procainamide (Procanbid), quinidine, and sotalol (Betapace, Betapace AF, Sorine); nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin, others) and naproxen (Aleve, Naprosyn, others); tacrolimus (Prograf); or theophylline (Elixophyllin, Theo-24, Uniphyl, others). Your doctor may need to change the doses of your medications or monitor you carefully for side effects. if you are taking antacids containing aluminum hydroxide or magnesium hydroxide (Maalox, Mylanta, Tums, others), didanosine (Videx), sucralfate (Carafate), or vitamin or mineral supplements that contain iron or zinc, take these medications 2 hours before or after you take levofloxacin. tell your doctor if you or anyone in your family has or has ever had a prolonged QT interval (a rare heart problem that may cause irregular heartbeat, fainting, or sudden death) or an irregular heartbeat, and if you have or have ever had nerve problems; a low level of potassium in your blood; a slow heartbeat; cerebral arteriosclerosis (narrowing of blood vessels in or near the brain that can lead to stroke or mini-stroke); seizures; chest pain; or liver disease. you should know that levofloxacin may cause confusion, dizziness, lightheadedness, and tiredness. Do not drive a car, operate machinery, or participate in activities requiring alertness or coordination until you know how this medication affects you. plan to avoid unnecessary or prolonged exposure to sunlight or ultraviolet light (tanning beds and sunlamps) and to wear protective clothing, sunglasses, and sunscreen. Levofloxacin may make your skin sensitive to sunlight or ultraviolet light. If your skin becomes reddened, swollen, or blistered, like a bad sunburn, call your doctor.

Overdose

In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Educational reference only — talk to a pharmacist or prescriber about Levofloxacin.