Ciprofloxacin is an antibiotic in a group of drugs called fluoroquinolones (flor-o-KWIN-o-lones). Ciprofloxacin fights bacteria in the body.

Ciprofloxacin is used to treat different types of bacterial infections. Ciprofloxacin is also used to treat people who have been exposed to anthrax.

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  • Cipro, Cipro XR, Proquin XR
  • More common
    Bloody or black, tarry stools
    burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
    changes in skin color
    changes in urination
    chest pain or discomfort
    chest tightness or heaviness
    chills or fever
    clumsiness or unsteadiness
    continuing ringing or buzzing or other unexplained noise in the ears
    coughing or spitting up blood
    dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
    fast, irregular, pounding, or racing heartbeat or pulse
    headache, severe and throbbing
    hearing loss
    hives or welts
    joint stiffness
    large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
    light-colored stools
    muscle pain or stiffness
    nausea and vomiting
    numbness of the hands
    pain in the joints
    pain or discomfort in the arms, jaw, back, or neck
    painful, red lumps under the skin, mostly on the legs
    pounding in the ears
    puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
    redness of the face, neck, arms, and occasionally, upper chest
    severe abdominal or stomach pain, cramping, or burning
    shakiness in the legs, arms, hands, or feet
    skin rash
    swelling of the face, feet, or lower legs
    swollen, painful, or tender lymph glands in the neck, armpit, or groin
    thick, white vaginal discharge with no odor or with a mild odor
    unsteadiness, trembling, or other problems with muscle control or coordination
    unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
    white patches in the mouth and/or on the tongue
    yellow eyes or skin
    Incidence not known
    Acid or sour stomach
    blistering, peeling, or loosening of the skin
    bluish-colored lips, fingernails, or palms
    bone pain
    diarrhea, watery and severe, which may also be bloody
    difficulty with breathing, chewing, or talking
    double vision
    excessive muscle tone
    feeling of discomfort
    feeling, seeing, or hearing things that are not there
    increased sensitivity to pain
    increased sensitivity to touch
    irregular or slow heart rate
    mood changes
    rapid heart rate
    red skin lesions, often with a purple center
    sores, ulcers, or white spots on the lips or in the mouth
    unusual bleeding or bruising
    unusual excitement, nervousness, or restlessness
    vaginal yeast infection
    Severity: Minor
    Some of the side effects that can occur with ciprofloxacin may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    Less common
    Runny nose
    stuffy nose
  • (ciprofloxacin) tablet, film coated, extended release
  • Bacterial Infection

    Treating certain bacterial infections. It may be used in combination with other medicines to treat acne or certain amoeba infections. It may be used to prevent certain types of malaria in travelers who will be visiting malaria-infected areas for less than 4 months. It may also be used to prevent or slow the progression of anthrax after exposure. Doryx delayed-release capsules are a tetracycline antibiotic. It works by slowing the growth of bacteria. Slowing the bacteria's growth allows the body's immune system to destroy the bacteria.