Tavanic must not be used to treat children and adolescents because of the probability of destruction of the articular cartilage.
In the treatment of elderly patients should be aware that patients in this group often have impaired renal function parabolan cycle.
for very severe pneumonia, caused by pneumococcus tavanic may not give the optimal therapeutic effect. Hospital infections caused by certain pathogens (P. aeruginosa), may require combination therapy.
During treatment  may develop seizures attack in patients with previous brain damage caused by, for example, stroke or severe injury. Seizure may be increased, and while the application fenbufena similar to him  or theophylline (sm. “Interactions”).
Despite the fact that the photosensitivity observed in the application of levofloxacin is very rare, in order to avoid her patients is not recommended to be subjected unnecessarily to strong sunlight or artificial ultraviolet light (eg, exposure to the sun in the highlands or the solarium).
If you suspect pseudomembranous colitis should immediately cancel tavanic and start appropriate treatment. In such cases, you can not use drugs that suppress intestinal motility.
Rarely observed when using the drug tavanic tendinitis (especially inflammation of the Achilles tendon) may lead to tendon rupture. Elderly parabolan cycle patients are more prone to tendonitis. Corticosteroid treatment ( “cortisone preparations”) are likely to increase the risk of tendon rupture. If you suspect tendonitis, stop treatment  and start appropriate treatment of the affected tendon, for example, providing him rest state .
Patients with deficiency of parabolan cycle dehydrogenase (an inherited metabolic disorder) fluoroquinolones can respond to the destruction of erythrocytes (hemolysis). In this regard, the treatment of such patients with levofloxacin should be carried out with great care.
These side effects Tavanic drug like dizziness or numbness, drowsiness and visual disturbances , can impair reactivity and ability to concentrate. this can be a risk in situations where these abilities are of special importance (eg while driving, during maintenance of machines and mechanisms, when working in an unstable position). in particular as it concerns cases of drug interactions with alcohol.