Clinical efficacy of ofloxacin in the treatment of otorhinolaryngological infections.

A multi-centered clinical study was carried out to evaluate the efficacy of ofloxacin in otorhinolaryngological infections in Japan. Ofloxacin was used at a dosage of 300 mg to 800 mg daily for three to 20 days in 206 cases of various infectious diseases in the otorhinolaryngological field such as otitis media, external otitis, paranasal sinusitis, tonsillitis and pharyngolaryngitis. Its efficacy rate was 79.9%. Minor side effects were seen in three cases (1.5%), gastro-intestinal disorders in two and headache in one. The antibacterial activity of ofloxacin was compared with the activity of pipemidic acid, nalidixic acid and norfloxacin against clinically isolated microorganisms. Ofloxacin was highly superior to pipemidic acid and nalidixic acid, and slightly more active than or equivalent to norfloxacin.