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Symptoms of Benign Prostatic Hyperplasia

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published: Jun 28, 2017
Last Updated:

Summary of Symptoms of Benign Prostatic Hyperplasia

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Symptoms of Benign Prostatic Hyperplasia

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect symptoms of benign prostatic hyperplasia
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
grade-b Minor - See study
Urinary complications with Benign prostatic hyperplasia appear to be reduced with Pygeum supplementation in the range of 19-23% (including nocturia, residual urine volume, and urinary flow rate).
grade-b Minor - See all 7 studies
Smaller, shorter trials have noted some effect, but larger, longer trials have noted no effect. The most recent Cochrane meta-analysis also notes no effect.
grade-c Minor - See study
Appears to increase urinary flow rate in persons with benign prostatic hyperplasia
grade-d Minor - See study
A decrease was noted alongside improvements in prostatic size, but a magnitude of reduction was not given for evaluation.