http://www.drugs.com/Levaquin/
? If you experience any of the following serious side effects, stop taking levofloxacin and seek emergency medical attention or contact your doctor immediately:
· an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
· seizures;
· confusion or hallucinations;
· irregular heartbeats, chest pain, or fainting;
· liver damage (yellowing of the skin or eyes, nausea, abdominal pain or discomfort, unusual bleeding or bruising, severe fatigue); or
· muscle or joint pain.
? If you experience any of the following less serious side effects, continue taking levofloxacin and talk to your doctor:
· nausea, vomiting, diarrhea, or constipation;
· headache or lightheadedness;
· drowsiness;
· insomnia;
· ringing in the ears; or
· increased sensitivity of the skin to sunlight.