In the first RCT, two groups of participants were randomly selected to receive one of the following treatments daily for 24 weeks:
All participants were asked to continue their usual diets and medications.
1. the large amount (15 capsules) and size of the capsules
2. participants believing the treatment wasn’t effective.
Compared to the placebo group, members of the blackcurrant seed oil group who completed the trial had:
The minor side-effects of blackcurrant seed oil didn’t contribute to participants withdrawing from the trial. The nature of the side-effects wasn’t reported.
In the second RCT, participants were randomly selected to receive one of the following treatments daily for six weeks:
The effects on morning stiffness, grip strength, pain and physical function were measured at the end of the trial and again six weeks after treatment.
Compared to the placebo group, who showed no improvement at both assessment points, participants on blackcurrant seed oil had significant reduction in morning stiffness at the end of the treatment; however, this beneficial effect wasn’t observed six weeks after the trial had ended.
Compared with the placebo, blackcurrant seed oil had no significant effect on improving the following at either at assessment point:
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