Such problems could potentially affect a patient's shoulder, hand or ankle tendons, and the risk is highest in people over the age of 60, according to the center.
Other less serious side effects of Levaquin use include nausea, vomiting, heartburn or fever, and patients taking the medication who suffer from these effects are encouraged to contact their doctors, the center says.
In order to avoid side effects of the medication as much as possible, patients should also try to drink plenty of water or other fluids on the days that they inject the drug. Additionally, patients should not attempt to make up for a missed dose by injecting a double dose, according to the center.
According to the National Library of Medicine's Web site, levofloxacin injections such as Levaquin can also occasionally be used in the treatment of endocarditis, which is an infection of the valves and lining of the heart.