PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 30 PubMed articles · model: gemma4:31b
Summary
Background
Active compounds
Mechanism of action
Clinical evidence
Some systematic reviews show improvement in flow rates and symptoms [PMID:18423748], and certain supplements including saw palmetto positively influence BPH symptoms [PMID:31451276]. However, other evidence is mixed, with some trials showing equivalence to placebo [PMID:18423748] and a lack of conclusive proof for efficacy in treating lower urinary tract symptoms [PMID:16985705].
A double-blind, placebo-controlled study using a combination supplement containing Serenoa repens, Cucurbita pepo, Pygeum africanum, and l-Cystine found that hair density increased by 9.9 hairs/cm2 after 3 months and 12.3 hairs/cm2 after 6 months [PMID:39911983].
Safety & adverse effects
Evidence summary
PubMed sources
- 1.PMID: 39911983 (2025) — Oral Supplementation with l-Cystine, Serenoa repens, Cucurbita pepo, and Pygeum africanum in Chronic Telogen Effluvium and Androgenetic Alopecia: A Double-Blind, Placebo-Controlled, Randomized Clinical Study. · Skin appendage disorders
- 2.PMID: 31451276 (2019) — Benign prostate hyperplasia and nutrition. · Clinical nutrition ESPEN
- 3.PMID: 12149159 (2002) — Phytotherapy for benign prostatic hyperplasia. · Current urology reports
- 4.PMID: 25703069 (2015) — What do we know about phytotherapy of benign prostatic hyperplasia? · Life sciences
- 5.PMID: 19281408 (1999) — Determination of the Fatty Acid content of pumpkin seed, pygeum, and saw palmetto.