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Research finding
Japanese trial: 88 men took lingzhi extract for 12 weeks
88 men with urinary complaints took part in a trial. After 12 weeks of 6 mg a day of an ethanol of lingzhi, their improved more than in those taking a .
Controlled human trialCompares people who took it with people who did notHow the study was done
Compared with a placebo group for 12 weeks, with urine flow rate, prostate size, PSA, testosterone and other measures also tested.
What the researchers say
The researchers reported no clear changes in quality of life, urine flow rate, prostate size, PSA or testosterone.
Source
Noguchi M et al., Asian Journal of Andrology, 2008
Abstract checked Last updated: 2026-10-06
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