Warnings/PrecautionsYou should not use ciprofloxacin if you are also taking tizanidine (Zanaflex), or if you are allergic to ciprofloxacin or similar medications such as levofloxacin (Levaquin), lomefloxacin (Maxaquin), moxifloxacin (Avelox), ofloxacin (Floxin), norfloxacin (Noroxin), and others.
Before taking ciprofloxacin, tell your doctor if you have a heart rhythm disorder, especially if you are being treated with one of these medications: quinidine (Cardioquin, Quinidex, Quinaglute), disopyramide (Norpace), bretylium (Bretylol), procainamide (Pronestyl, Procan SR), amiodarone (Cordarone, Pacerone), or sotalol (Betapace).
If you have any of these other conditions, you may need a dose adjustment or special tests to safely take ciprofloxacin:
- a history of allergic reaction to an antibiotic;
- joint problems;
- myasthenia gravis;
- kidney or liver disease;
- epilepsy or seizures;
- diabetes;
- low levels of potassium in your blood (hypokalemia); or
- a personal or family history of Long QT syndrome.
Possible Side EffectsStop using ciprofloxacin and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using ciprofloxacin and call your doctor at once if you have any of these serious side effects:
- dizziness, fainting, fast or pounding heartbeat;
- sudden pain or swelling near your joints (especially in your arm or ankle);
- diarrhea that is watery or bloody;
- confusion, hallucinations, depression, unusual thoughts or behavior;
- seizure (convulsions);
- pale or yellowed skin, dark colored urine, fever, weakness;
- urinating less than usual or not at all;
- easy bruising or bleeding;
- numbness, tingling, or unusual pain anywhere in your body;
- fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or
- the first sign of any skin rash, no matter how mild.
Less serious ciprofloxacin side effects may include:
- nausea, vomiting;
- dizziness or drowsiness;
- blurred vision;
- feeling nervous, anxious, or agitated;
- sleep problems (insomnia or nightmares); or
- increased sensitivity of the skin to sunlight.
More InformationYour pharmacist can provide more information about ciprofloxacin.