Home Ingredients Prostpalm® (Saw Palmetto for Prostate — BGG)
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Prostpalm® (Saw Palmetto for Prostate — BGG)

Serenoa repens
Evidence Level
Limited
2 Clinical Trials
5 Documented Benefits
2/5 Evidence Score

Prostpalm is a standardized saw palmetto extract (Serenoa repens) from BGG. Saw palmetto has been studied for decades in men with benign prostatic hyperplasia (BPH), and the largest placebo-controlled syntheses have been negative: a Cochrane review pooling 32 randomized trials in 5,666 men found it did not improve urinary flow measures or prostate size, and a 2024 updated Cochrane review of 27 studies in 4,656 participants concluded it provides little to no benefit for urinary symptoms. The Prostpalm brand itself was not tested in any of the studies cited here, all of which are reviews rather than new trials. Commonly taken by older men for urinary symptoms. Important: new or worsening urinary symptoms should be evaluated by a doctor, because they can be caused by infection or prostate cancer, and a supplement must never delay that assessment.

Studied Dose 320 mg/day of saw palmetto extract (the dose used in most trials, including the trials that found no benefit)
Active Compound Saw palmetto fatty acids and sterols (typically 85-95% fatty acids standardization)

Benefits

What the Trials Actually Found for Urinary Symptoms

The largest placebo-controlled evidence does not support a symptom benefit. A Cochrane review of 32 randomized trials in 5,666 men found that saw palmetto, even at double and triple doses, did not improve urinary flow measures or prostate size in men with lower urinary tract symptoms from BPH. A 2024 updated Cochrane review of 27 studies in 4,656 participants reached the same conclusion, finding little to no benefit. Men should not expect this extract to change urinary frequency, urgency, flow or nighttime waking.

Supported by Trial 1

Prostate Health Support

Saw palmetto is one of the most widely sold prostate supplements, but popularity is not evidence. Nothing on this page tested the Prostpalm brand, and the two Cochrane-family reviews cited here were negative for urinary symptoms.

Supported by Trial 2, Trial 1

Modest 5-Alpha Reductase Effects

Laboratory work suggests saw palmetto fatty acids weakly inhibit 5-alpha reductase, the enzyme that converts testosterone to DHT. This is a proposed mechanism only. None of the studies cited on this page measured it in men.

Supported by Trial 2, Trial 1

Anti-Inflammatory Prostate Effects

An anti-inflammatory action in prostate tissue has been proposed, but none of the references on this page tested inflammation, so this stays a hypothesis rather than a demonstrated effect.

Supported by Trial 2, Trial 1

Generally Well-Tolerated for Long-Term Use

Tolerability is the most consistent finding in this literature. Across the pooled reviews saw palmetto was well tolerated, and the comparison with tamsulosin reported fewer sexual side effects with saw palmetto than with the drug.

Supported by Trial 1, Trial 2

Mechanism of action

1

5-Alpha Reductase Inhibition (Modest)

In laboratory studies, saw palmetto fatty acids weakly inhibit both forms of 5-alpha reductase, the enzyme that converts testosterone to dihydrotestosterone (DHT). Whether this happens to a meaningful degree at supplement doses in men has not been shown by any study cited here, which fits the negative symptom results.

2

Anti-Inflammatory Prostate Effects

Proposed to reduce inflammatory signals in prostate tissue. This comes from laboratory work; the four human reviews cited on this page did not measure it.

3

Alpha-Adrenergic Receptor Effects

Laboratory studies suggest effects on alpha-adrenergic receptors in bladder neck and prostate smooth muscle. This was not tested in any of the human reviews cited here.

4

Anti-Estrogenic Effects (Modest)

Weak anti-estrogenic activity has been reported in laboratory studies. Its relevance to urinary symptoms in men has not been demonstrated by anything cited on this page.

Clinical trials

1
Cochrane Review 2012: No Improvement in Urinary Flow or Prostate Size

2012 Cochrane systematic review (Tacklind and colleagues, PMID 23235581) pooling 32 randomized trials in 5,666 men. This is a synthesis of existing trials, not a new trial.

5,666 men with lower urinary tract symptoms consistent with BPH, across 32 randomized trials.

This review found no benefit. Its conclusion was that saw palmetto, at double and triple doses, did not improve urinary flow measures or prostate size in men with lower urinary tract symptoms consistent with BPH. It was well tolerated.

2
Saw Palmetto STEP Trial

A placebo-controlled trial of saw palmetto in men with BPH. Note that this trial is not among the four references listed on this page, so its details are not independently verified here.

BPH patients.

No significant benefit compared with placebo. This is one of several negative results in the saw palmetto literature and it lines up with the two Cochrane reviews cited above, which also found no improvement in urinary symptoms.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated.
Mild GI distress.
Headache rare.
Allergic reactions rare.
Theoretical bleeding at high doses.

Important Drug interactions

Anticoagulants — modest interactions.
Finasteride / dutasteride — same pharmacological target; theoretical additive 5-AR inhibition; consult.
Hormone-sensitive cancers (prostate, breast) — theoretical concerns; consult oncologist.
Pregnancy — N/A (men's health product).
Pre-surgery — discontinue 1-2 weeks before.

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Frequently asked questions about Prostpalm® (Saw Palmetto for Prostate — BGG)

What is Prostpalm?

Prostpalm is a standardized saw palmetto extract (Serenoa repens) from BGG. Saw palmetto has been studied for decades in men with benign prostatic hyperplasia (BPH), and the largest placebo-controlled syntheses have been negative: a Cochrane review pooling 32 randomized trials in 5,666 men found it did not improve urin…

What is Prostpalm used for?

Prostpalm is researched primarily for Men's Health and Prostate Health. The largest placebo-controlled evidence does not support a symptom benefit. A Cochrane review of 32 randomized trials in 5,666 men found that saw palmetto, even at double and triple doses, did not improve urinary flow measures or prostate s…

What is the recommended dosage of Prostpalm?

The clinically studied dose is 320 mg/day of saw palmetto extract (the dose used in most trials, including the trials that found no benefit) Always follow the product label and check with a healthcare provider for personal advice.

Is Prostpalm safe, and does it have side effects?

For most healthy adults, Prostpalm is well tolerated at studied doses. Reported effects can include: Generally well-tolerated. Mild GI distress. It may also interact with some medications. Prostpalm is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Prostpalm interact with any medications?

Possible interactions include: Anticoagulants — modest interactions. Finasteride / dutasteride — same pharmacological target; theoretical additive 5-AR inhibition; consult. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Prostpalm?

NutraSmarts rates the evidence for Prostpalm as Limited (2 out of 5). It is backed by 2 clinical trials and 4 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(4 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Cai T, Cui Y, Yu S, Li Q, Zhou Z, Gao Z Comparison of Serenoa repens With Tamsulosin in the Treatment of Benign Prostatic Hyperplasia: A Systematic Review and Meta-Analysis Am J Mens Health. 2020;14(2):1557988320905407. doi: 10.1177/1557988320905407.PubMedUsed to support: Review of 4 studies in 1,080 men comparing saw palmetto with the drug tamsulosin. Symptom scores, quality of life and residual urine were similar between the two, but there was no placebo group, so this design cannot show that either treatment worked. Its genuinely useful finding is tolerability, including fewer sexual side effects than tamsulosin. Compound-level evidence; the Prostpalm brand was not evaluated.
  2. Vela-Navarrete R, Alcaraz A, Rodriguez-Antolin A, et al. Efficacy and safety of a hexanic extract of Serenoa repens (Permixon®) for the treatment of lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH): systematic review and meta-analysis of randomised controlled trials and observational studies BJU Int. 2018;122(6):1049-1065. doi: 10.1111/bju.14362.PubMedUsed to support: Review of 27 studies in 5,800 participants of one specific saw palmetto preparation, the hexanic extract sold as Permixon, which it found effective and well tolerated for urinary symptoms. Permixon is a different product from Prostpalm, and saw palmetto preparations are not interchangeable, which is exactly why the hexanic extract is studied on its own. This positive result belongs to that extract and does not transfer to this brand.
  3. Tacklind J, Macdonald R, Rutks I, Stanke JU, Wilt TJ Serenoa repens for benign prostatic hyperplasia Cochrane Database Syst Rev. 2012;12:CD001423. doi: 10.1002/14651858.CD001423.pub3.PubMedUsed to support: Cochrane systematic review of 32 randomized trials (5,666 men) on Serenoa repens for BPH. Its conclusion was that saw palmetto, at double and triple doses, did not improve urinary flow measures or prostate size. This is a negative result. It supports 'generally well tolerated' and nothing more.
  4. Franco JV, Trivisonno LF, Sgarbossa N, Alvez GA, Fieiras C, Escobar Liquitay CM, Jung JH Serenoa repens for the Treatment of Lower Urinary Tract Symptoms Due to Benign Prostatic Enlargement: An Updated Cochrane Review World J Mens Health. 2024;42(3):518-530. doi: 10.5534/wjmh.230222.PubMedUsed to support: 2024 updated Cochrane review of 27 studies in 4,656 participants. It concluded that saw palmetto alone provides little to no benefit for men with urinary symptoms due to benign prostatic enlargement. This is a negative finding and cannot support any efficacy or 'prostate health support' claim; it does support that the herb is generally well tolerated.