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Bhang YH, Kim KI, Kim J, Ahn J, Jung HS, Yang C, Ko SJ, Bu Y, Park JW, Park KS, Jung HJ, Lee JH, Lee BJ. Efficacy and safety of Ojeok-san plus Saengmaek-san for gastroesophageal reflux-induced chronic cough: protocol for a pilot, randomized, double-blind, placebo-controlled trial. Trials 2020; 21:118. [PMID: 31996267 PMCID: PMC6990619 DOI: 10.1186/s13063-019-4030-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 12/28/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Gastroesophageal reflux disease (GERD) is a major cause of chronic cough. GERD-induced chronic cough is difficult to diagnose because some patients do not complain of any gastrointestinal (GI) reflux symptoms. Although chronic cough due to GERD is highly prevalent, no effective treatment is currently available, especially for GERD-related cough without GI symptoms. Because the herbal medicines Ojeok-san and Saengmaek-san can effectively treat GERD and cough, we aim to evaluate the efficacy and safety of a combination of these components for relieving chronic cough due to GERD. METHODS/DESIGN This is a study protocol of a randomized, double-blind, placebo-controlled, single-center pilot trial. After a 1-week run-in period, a total of 30 patients with GERD-induced chronic cough will be randomly allocated to an intervention group (n = 15) or a placebo group (n = 15). Participants will receive 5.76 g of Ojeok-san plus Saengmaek-san or a placebo three times per day for 6 weeks. The primary outcome measures, which are the frequency and severity of cough, will be recorded using a cough diary. The secondary outcome measures will include a cough visual analogue scale, the Leicester Cough Questionnaire (Korean version), the Gastrointestinal Symptom Rating Scale, the Hull Airway Reflux (hypersensitivity) Questionnaire, the Pattern Identification for Chronic Cough Questionnaire, the Pattern Identification for Gastroesophageal Reflux Disease, and safety testing. Adverse events will also be reported. DISCUSSION This will be the first clinical trial to explore the use of herbal medicines for GERD-related chronic cough, including patients without GI reflux symptoms. This study will provide useful evidence regarding the efficacy and safety of Ojeok-san plus Saengmaek-san treatment. In addition, this trial will offer a scientific basis for the combination of herbal medicines. This study will also provide important data for conducting a larger-scale clinical trial on GERD-induced chronic cough. TRIAL REGISTRATION This trial has been registered with Clinical Research Information Service (CRIS) of South Korea (http://cris.nih.go.kr; registration number KCT0003115). Registered August 28, 2018.
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Affiliation(s)
- Yeon Hee Bhang
- Division of Allergy, Immune and Respiratory System, Department of Internal Medicine, College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Kwan-Il Kim
- Division of Allergy, Immune and Respiratory System, Department of Internal Medicine, College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Jaehyo Kim
- Division of Allergy, Immune and Respiratory System, Department of Internal Medicine, College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Junmo Ahn
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Hwan-Su Jung
- College of Korean Medicine, Sang-Ji University, 83 sangjidae-gil, Wonju-si, Ganwondo 26339 Republic of Korea
| | - Changsop Yang
- Clinical Medicine Division, Korea Institute of Oriental Medicine, Daejeon, 34054 Republic of Korea
| | - Seok-Jae Ko
- College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Youngmin Bu
- College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Jae-Woo Park
- College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Kyoung Sun Park
- College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Hee-Jae Jung
- Division of Allergy, Immune and Respiratory System, Department of Internal Medicine, College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Jun-Hwan Lee
- Clinical Medicine Division, Korea Institute of Oriental Medicine, Daejeon, 34054 Republic of Korea
- Korean Medicine Life Science, University of Science & Technology (UST), Campus of Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon, 34054 Republic of Korea
| | - Beom-Joon Lee
- Division of Allergy, Immune and Respiratory System, Department of Internal Medicine, College of Korean Medicine, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, 26 Kyung Heedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
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