Clinical Trial: Pomegranate fruit extract improves symptoms of rheumatoid arthritis

Rheumatoid arthritis (RA) is an autoimmune disease that is caused by inflammation in joints limiting mobility.

Because the main traits of rheumatoid arthritis are caused by inflammation natural ingredients including plant extracts that can reduce inflammation and provide pain relief may be very beneficial.

Pomegranate is a fruit native to the Middle East and India and is rich in flavonoids and other polyphenols.

A study published in the European Journal of Clinical Nutrition compared pomegranate to placebo for relieving symptoms of rheumatoid arthritis.

The results suggest pomegranate extract was able to reduce swollen and tender joints, pain intensity, morning stiffness and more.

Here are the study details

Study design: Double blind randomized placebo controlled trial

Patients:  55 Human subjects were enrolled in the study.  Patients were over 40 years old who suffered from joint pain and swelling even though they were receiving methotrexate, hydroxychloroquine, sulfasalazine, and prednisolone).

Study agent: Patients received pomegranate extract (POMx) capsules that contained 40% ellagic acid.   Patients received 2 capsules for a total daily dose of 500 mg of pomegranate extract.

Study length: The study lasted 8 weeks

Here are more clinical studies of plant extracts studied for reducing inflammation.

 

Here are the main results

Swollen joints decreased over 8 weeks by an average of 2.6 joints

Tender joints decreased over 8 weeks by an average of 2.1 joints

Average time of morning stiffness decreased by 36 minutes

The disease activity score 28 (DAS28) decreased by an average of 0.9

 

Here are comments by the authors

The findings of the present study are in agreement with those of the study conducted by Rasheed et al.19 which indicated that POMx inhibits pro-inflammatory cytokines production via inhibiting the gene expression.

 

Take away message

The results of this study suggest that pomegranate could decrease markers of inflammation and joint symptoms in patients with rheumatoid arthritis.  The dose of pomegranate extract was 500 mg per day with the product being standardized to 40% ellagic acid.

More studies will be needed to confirm the results of this study, however, the results suggest that phytochemicals in pomegranate could improve rheumatoid arthritis symptoms.

 

Reference

Ghavipour M et al.  Pomegranate extract alleviates disease activity and some blood biomarkers of inflammation and oxidative stress in Rheumatoid Arthritis patients.  European Journal of Clinical Nutrition. 2017; Volume 71 (Issue 1): Pages 92-96.

Jeremy Johnson, PharmD, PhD


Categories: Arthritis, Clinical Trials, Inflammation