Back to Journals » Clinical Interventions in Aging » Volume 9

Efficacy and safety of Curcuma domestica extracts compared with ibuprofen in patients with knee osteoarthritis: a multicenter study

Authors Kuptniratsaikul V, Dajpratham P, Taechaarpornkul W, Buntragulpoontawee M, Lukkanapichonchut P, Chootip C, Saengsuwan J, Tantayakom K, Laongpech S

Received 30 November 2013

Accepted for publication 9 January 2014

Published 20 March 2014 Volume 2014:9 Pages 451—458


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Vilai Kuptniratsaikul,1 Piyapat Dajpratham,1 Wirat Taechaarpornkul,2 Montana Buntragulpoontawee,3 Pranee Lukkanapichonchut,4 Chirawan Chootip,5 Jittima Saengsuwan,6 Kesthamrong Tantayakom,7 Supphalak Laongpech8

1Department of Rehabilitation Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; 2Sirindhorn National Medical Rehabilitation Center, Ministry of Public Health, Nonthaburi, Thailand; 3Department of Rehabilitation Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; 4Department of Rehabilitation Medicine, Ratchaburi Hospital, Ministry of Public Health, Ratchaburi, Thailand; 5Department of Rehabilitation Medicine, Songkhla Hospital, Ministry of Public Health, Songkhla, Thailand; 6Department of Rehabilitation Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; 7Department of Rehabilitation Medicine, Rajvithi Hospital, Ministry of Public Health, Bangkok, Thailand; 8Department of Rehabilitation Medicine, Vachira Phuket Hospital, Ministry of Public Health, Phuket, Thailand

Objective: To determine the efficacy and safety of Curcuma domestica extracts in pain reduction and functional improvement.
Methods: 367 primary knee osteoarthritis patients with a pain score of 5 or higher were randomized to receive ibuprofen 1,200 mg/day or C. domestica extracts 1,500 mg/day for 4 weeks. The main outcomes were Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) total, WOMAC pain, WOMAC stiffness, and WOMAC function scores. Adverse events (AEs) were also recorded.
Results: 185 and 182 patients were randomly assigned into C. domestica extracts and ibuprofen groups, respectively. The baseline characteristics were no different between groups. The mean of all WOMAC scores at weeks 0, 2, and 4 showed significant improvement when compared with the baseline in both groups. After using the noninferiority test, the mean difference (95% confidence interval) of WOMAC total, WOMAC pain, and WOMAC function scores at week 4 adjusted by values at week 0 of C. domestica extracts were noninferior to those for the ibuprofen group (P=0.010, P=0.018, and P=0.010, respectively), except for the WOMAC stiffness subscale, which showed a trend toward significance (P=0.060). The number of patients who developed AEs was no different between groups. However, the number of events of abdominal pain/discomfort was significantly higher in the ibuprofen group than that in the C. domestica extracts group (P=0.046). Most subjects (96%–97%) were satisfied with the treatment, and two-thirds rated themselves as improved in a global assessment.
Conclusion: C. domestica extracts are as effective as ibuprofen for the treatment of knee osteoarthritis. The side effect profile was similar but with fewer gastrointestinal AE reports in the C. domestica extracts group.

Keywords: Curcuma domestica, curcumin, efficacy, ibuprofen, knee osteoarthritis, safety

A Letter to the Editor has been received and published for this article

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]