25 June 2013

Effects of Kivia powder (Phloe powder) on Gut health in patients with occasional constipation: A randomized, double-blind, placebo-controlled study

Tue 25 Jun 2013
We recently conducted a clinical trial on the effect Kivia Powder (which is the same as Phloe powder, known as Kivia in Australia) had on the gut health of patients having occasional constipation. Here is an overview of the study and the positive results we achieved with it.


To evaluate the efficacy of Kivia powder on supporting overall gut health through the relief of the discomfort of occasional constipation.


Randomized, double-blind, placebo-controlled, parallel-group trial.


The investigational product for this study was Kivia powder (Vital Food Processors Ltd., Auckland, New Zealand), containing the active ingredient ZyactinaseTM, 5.5g taken daily for four weeks.


One hundred thirty-eight subjects reporting occasional constipation were screened and 87 were randomized to placebo (n = 44) and product (n = 43). Bowel movement frequency, as measured by both average daily spontaneous bowel movements(SBM) and complete spontaneous bowel movements (CSBM), were the same in both groups at baseline.


There were significant increases in spontaneous bowel movements at week 1 (p = 0.001), week 2 (p = 0.001), week 3 (p = 0.000), and week 4 (p = 0.000) compared to baseline. SBM demonstrated significant differences between the treatment group and the placebo group at week 3 (p = 0.000), and week 4 (p = 0.020).

The treatment group demonstrated a significantly higher rate of SBM at week 3 (p = 000) and from baseline to week 4 (p = 0.019). Significant increases in complete spontaneous bowel movements were observed at week 1 (p = 0.000), week 2 (p = 0.000), week 3 (p = 0.000), and week 4 (p = 0.000) compared to baseline.

Moreover, CSBM was significantly higher for the treatment group compared to placebo at week 2 (p = 0.001). The change in average daily CSBM from baseline to week 2 was significantly higher in the treatment group than in the placebo group (p = 0.004).Abdominal discomfort or pain demonstrated significant differences between groups at week 1 (p = 0.044) and week 3 (p = 0.026).

Flatulence was significantly lower for active group compared to placebo at week 2 (p = 0.047) and week 3 (p = 0.023). The number of bowel movements associated with urgency was significantly lower in the treatment group compared to the placebo group at week 3 (p = 0.048).

In addition, it was decreased from baseline to week 1 (p = 0.040) and from baseline to week 3 (p = 0.024) in the treatment group, while the placebo group did not report any reductions in bowel urgency. Bowel movements in the treatment arm were significantly smoother and softer by week 2 (p = 0.020) and week 3 (p = 0.041).


Treatment with Kivia powder, an extract of kiwifruit containing ZyactinaseTM, for four weeks was well tolerated and more effective than placebo in gently enhancing bowel movement frequency and reducing abdominal pain and flatulence in subjects with occasional constipation.

Trial registration: ISRCTN: ISRCTN49036618


For the full report, please click on the following link: http://www.nutritionj.com/content/pdf/1475-2891-12-78.pdf

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