A Pilot Phase II Study of Combination Therapy with Oxatomide, an Antihistamine, Plus Dextromethoraphan and Bakumondo-to, an Herbal Drug, in Patients with Postinfectious Persistent Cough
Katsuya Fujimori1) Yoshinori Shimatsu1) Eiichi Suzuki2) Masaaki Arakawa2)
1)Department of Internal Medicine, Niigata Prefectural Shibata Hospital 2)Department of Medicine (II), Niigata University School of Medicine
Previously, we reported the effectiveness of treatment with oxatomide (O), an antihistamine, plus dextromethorphan (D), and that of Bakumondo-to (B), an herbal drug that inhibits the activation of C-fibers, in patients with persistent coughing after upper-airway infection. In this study, we evaluated the efficacy and side effects of combination therapy (O+D+B) in patients with postinfectious persistent cough.
Patients who had been coughing for more than three weeks and had a history of upper-airway infection took part in the study. None had any history of nasal disease, gastroesophageal reflux, bronchial asthma, or other chronic pulmonary disease. All patients were non-smokers, and none used angiotensin converting enzyme (ACE) inhibitors. All had normal chest roentgenograms and normal pulmonary function. The following hematological data were obtained before treatment: peripheral eosinophil counts, CRP levels, serum IgE concentrations, and titers of cold agglutinins and antibodies to Mycoplasma pneumoniae. The effects of one week of treatmet with O+D+B on the severity of coughing, as estimated with a cough diary, were examined. Thirty-six patients entered the study, but only 18 with normal hematological findings who satisfied the study criteria were eligible for efficacy and side-effect analyses. Cough scores decreased significantly from 5.1± 2.4 (range, 2-9) to 1.2± 1.9 (range, 0-6), and the rate of cough disappearance was 50%. Two patients reported slight drowsiness.
Therapy with O+D+B reduced perception of coughing as estimated with a cough diary. These results suggest that this therpy (O+D+B) may be useful in patients with postinfe ctious persistent cough.
Bakumondo-to persistent cough dextromethorphan oxatomide postinfectious cough
Received 平成9年7月31日
JJRS, 36(4): 338-342, 1998