What do the states mean?+
- Solid: well studied, and it works.
- Half-there: the science is still forming.
- A ghost: almost no real studies.
- Hollow: well studied, and it does not work.
- A cord: the pair itself has been tested together.
- Air: nobody has ever tested this pair.
The full scoring method: How we score
Saw palmetto benefits: where the science stands
For prostate and urinary symptoms: yes.
Prostate and urinary symptoms are what most people take saw palmetto for, and the best studies disagree: two found it helps, one found no effect. As of August 2026, the verdict on this page rests on evidence from 3 trials, drawn from the strongest research among the 96 papers on PubMed that mention saw palmetto. Every claim is checked below.
96 papers on PubMed · evidence from 3 trials
Claim by claim
- Prostate and urinary symptomsWell studied, and it works. Tested in 68 people.
Pairs people ask about
The three sources we read
- 2016Randomized trial · 21 people · no clear effect on prostate and urinary symptomssource
- 2019Meta-analysis · benefit for prostate and urinary symptomssource
- 2025Randomized trial · 68 people · benefit for prostate and urinary symptomssource
Chosen as the strongest evidence out of 96 papers on PubMed. Every row links to its paper.
Fair questions
Does saw palmetto work?+
For prostate and urinary symptoms, yes. Tested in 68 people.
Is saw palmetto safe?+
No caution is recorded on this page. That is not a safety guarantee; the studies we read were not safety trials.
Why only 3 sources, when PubMed lists 96?+
The 96 is every paper that mentions saw palmetto in any way: animal studies, blood measurements, papers where it is a side note. The strongest sources are combined reviews, and each one already gathers every trial its authors could find. Our 3 cover 3 trials between them, and every one is linked above. Both counts are measured, not estimated.