“Saw palmetto helps an enlarged prostate.”
A review of randomized trials found little to no meaningful improvement in urinary symptoms or quality of life from saw palmetto alone.
Saw palmetto alone usually does not meaningfully improve urinary symptoms caused by an enlarged prostate. Good placebo-controlled evidence does not support it as a reliable treatment. Findings for mixed herbal products are less certain.
A prostate can be enlarged without severe symptoms, and urinary symptoms can have other causes. Symptom improvement is the relevant outcome, not simply a supplement's proposed mechanism.
Safety note: Sudden inability to urinate needs urgent care, not a supplement trial.
Talk to a healthcare professional if: Discuss bothersome or persistent urinary symptoms. Established options include observation, medicines and procedures, depending on the problem.
You can address urinary symptoms without relying on an unproven herb.
Get the symptoms assessed and compare options with meaningful clinical evidence.