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Saccharomyces boulardii as an adjuvant therapy for Helicobacter pylori eradication: A systematic review and meta‐analysis with trial sequential analysis
Background and Aims
Whether Saccharomyces boulardii (S boulardii) as an adjuvant therapy are beneficial to H pylori eradication remains controversial. The aim of the study was to update and determine the effects of S boulardii as an adjuvant therapy on H pylori eradication rates and adverse effects.
Methods
We searched PubMed, Embase, CENTRAL, and Web of Science to collect all randomized controlled trials assessing the effects of S boulardii as an adjuvant therapy for H pylori eradication from inception to February 2019. Quality of evidence was appraised using Grading of Recommendations, Assessment, Development and Evaluation system. Trial sequential analysis was performed to control the risk of type I and type II errors.
Results
Eighteen trials with 3592 patients were eligible for meta‐analysis. Compared with standard eradication regimen, the S boulardii supplementation could significantly improve eradication rates [risk ratio (RR) = 1.09, 95% confidence interval (CI):1.05‐1.13; moderate quality evidence] and reduce the incidence of total side effects (RR = 0.47, 95%CI:0.36‐0.61; low quality evidence), as well as some gastrointestinal adverse effects, especially diarrhea (RR = 0.33, 95%CI:0.23‐0.47; low quality evidence) and constipation (RR = 0.37, 95%CI:0.23‐0.57; moderate quality evidence). In addition, the need for discontinuation rate in S boulardii supplementation group was significantly lower than in the control group (RR = 0.33, 95%CI:0.16‐0.69, P = .003; moderate quality evidence). The TSA results for overall eradication rates and total side effects indicated that the effects were conclusive.
Conclusions
Our meta‐analysis shows that S boulardii supplementation on standard eradication therapy significantly increased H pylori eradication rates and reduced the incidence of total side effects and some gastrointestinal adverse effects during eradication therapy.