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Original research
Curcumin and proton pump inhibitors for functional dyspepsia: a randomised, double blind controlled trial
  1. Pradermchai Kongkam1,2,
  2. Wichittra Khongkha3,
  3. Chawin Lopimpisuth1,2,
  4. Chitsanucha Chumsri4,5,
  5. Prach Kosarussawadee1,2,
  6. Phanupong Phutrakool5,6,
  7. Sittichai Khamsai7,
  8. Kittisak Sawanyawisuth7,
  9. Thanyachai Sura8,
  10. Pochamana Phisalprapa9,
  11. Thanwa Buamahakul10,
  12. Sarawut Siwamogsatham1,2,
  13. Jaenjira Angsusing11,
  14. Pratchayanan Poonniam11,
  15. Kulthanit Wanaratna11,
  16. Monthaka Teerachaisakul11,
  17. Krit Pongpirul4,5,12,13
  1. 1 Department of Internal Medicine, Chulalongkorn University Faculty of Medicine, Bangkok, Thailand
  2. 2 King Chulalongkorn Memorial Hospital, Bangkok, Thailand
  3. 3 Chao Phraya Abhaibhubejhr Hospital, Prachin Buri, Thailand
  4. 4 Department of Preventive and Social Medicine, Chulalongkorn University Faculty of Medicine, Bangkok, Thailand
  5. 5 Center of Excellence in Preventive & Integrative Medicine, Chulalongkorn University Faculty of Medicine, Bangkok, Thailand
  6. 6 Chula Data Management Centre, Chulalongkorn University Faculty of Medicine, Bangkok, Thailand
  7. 7 Khon Kaen University Faculty of Medicine, Khon Kaen, Thailand
  8. 8 Ramathibodi Hospital, Mahidol University Faculty of Medicine, Bangkok, Thailand
  9. 9 Siriraj Hospital, Mahidol University Faculty of Medicine, Bangkok, Thailand
  10. 10 Ratchaburi Hospital, Ratchaburi, Thailand
  11. 11 Department of Thai Traditional and Alternative Medicine, Royal Thai Government Ministry of Public Health, Bangkok, Thailand
  12. 12 Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
  13. 13 Department of Infection Biology & Microbiomes, University of Liverpool Faculty of Health and Life Sciences, Liverpool, UK
  1. Correspondence to Associate Professor Krit Pongpirul, Center of Excellence in Preventive & Integrative Medicine and Department of Preventive and Social Medicine, Chulalongkorn University Faculty of Medicine, Bangkok 10330, Thailand; doctorkrit{at}gmail.com

Abstract

Objective To compare the efficacy of curcumin versus omeprazole in improving patient reported outcomes in people with dyspepsia.

Design Randomised, double blind controlled trial, with central randomisation.

Setting Thai traditional medicine hospital, district hospital, and university hospitals in Thailand.

Participants Participants with a diagnosis of functional dyspepsia.

Interventions The interventions were curcumin alone (C), omeprazole alone (O), or curcumin plus omeprazole (C+O). Patients in the combination group received two capsules of 250 mg curcumin, four times daily, and one capsule of 20 mg omeprazole once daily for 28 days.

Main outcome measures Functional dyspepsia symptoms on days 28 and 56 were assessed using the Severity of Dyspepsia Assessment (SODA) score. Secondary outcomes were the occurrence of adverse events and serious adverse events.

Results 206 patients were enrolled in the study and randomly assigned to one of the three groups; 151 patients completed the study. Demographic data (age 49.7±11.9 years; women 73.4%), clinical characteristics and baseline dyspepsia scores were comparable between the three groups. Significant improvements were observed in SODA scores on day 28 in the pain (−4.83, –5.46 and −6.22), non-pain (−2.22, –2.32 and −2.31) and satisfaction (0.39, 0.79 and 0.60) categories for the C+O, C, and O groups, respectively. These improvements were enhanced on day 56 in the pain (−7.19, –8.07 and −8.85), non-pain (−4.09, –4.12 and −3.71) and satisfaction (0.78, 1.07, and 0.81) categories in the C+O, C, and O groups, respectively. No significant differences were observed among the three groups and no serious adverse events occurred.

Conclusion Curcumin and omeprazole had comparable efficacy for functional dyspepsia with no obvious synergistic effect.

Trial registration number TCTR20221208003.

  • general practice
  • digestive system disease
  • integrative medicine

Data availability statement

Data are available upon reasonable request. Data are available from the authors upon reasonable request.

https://doi.org/10.1136/bmjebm-2022-112231

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    Data availability statement

    Data are available upon reasonable request. Data are available from the authors upon reasonable request.

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    Footnotes

    • PK and WK are joint first authors.

    • Twitter @doctorkrit

    • PK and WK contributed equally.

    • Contributors PKon: data curation, writing original draft, review and editing. WK: data curation, writing original draft, review and editing. CL: writing original draft, review and editing. CC: writing original draft, review and editing. PKos: data curation, review and editing. PPhu: data curation, review and editing. SK: data curation, review and editing. KS: data curation, review and editing. TS: data curation, review and editing. PPhi: data curation, review and editing. TB: data curation, review and editing. SS: data curation, review and editing. JA: administration, data curation, review and editing. PPo: administration, data curation, review and editing. KW: supervision, data curation, review and editing. MT: supervision, funding, data curation, review and editing. KP: study design, data curation, formal analysis, writing original draft, review and editing. KP: guarantor.

    • Funding This study received financial support from the Thai Traditional and Alternative Medicine Fund (Grant No 3-2561).

    • Competing interests None declared.

    • Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting or dissemination plans of this research.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    • Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.