Levofloxacin, sold under the brand name Levaquin among others, is a broad-spectrum antibiotic of the fluoroquinolone drug class. [7] It is the left-handed isomer of the medication ofloxacin. [7][8] It is used to treat a number of bacterial infections including acute bacterial sinusitis, pneumonia, H. pylori (in combination with other medications), urinary tract infections, Legionnaires. Levofloxacin (Levaquin) is an antibiotic that treats bacterial infections. It doesn’t treat colds, the flu or viral infections. Levofloxacin is a fluoroquinolone antibiotic used to treat serious bacterial infections and prevent anthrax or plague exposure when safer options aren't suitable. Find patient medical information for Levofloxacin (Levaquin) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Discontinue LEVAQUIN® immediately and avoid the use of fluoroquinolones, including LEVAQUIN®, in patients who experience any of these serious adverse reactions [see Warnings and Precautions (5.1)] Fluoroquinolones, including LEVAQUIN®, may exacerbate muscle weakness in patients with myasthenia gravis. Levofloxacin (Levaquin - a discontinued brand) is a prescription drug used to treat bacterial sinus infections, skin infections, lung infections, ear infections, urinary tract infections, as well as infections of the bones and joints. The most frequently reported side effects are nausea or vomiting, diarrhea, headache, and constipation. Do not take if pregnant or breastfeeding. Learn about levofloxacin usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Levaquin (Levofloxacin) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Levaquin (levofloxacin) is used to treat bronchitis, pneumonia, chlamydia, gonorrhea and skin infections. Includes Levaquin side effects, interactions and indications. Description Levofloxacin is used to treat bacterial infections in many different parts of the body. It is also used to treat anthrax infection after inhalational exposure. Levofloxacin is also used to treat and prevent plague (including pneumonic and septicemic plague). Levofloxacin belongs to the class of medicines known as quinolone antibiotics. It works by killing bacteria or preventing.