Finasteride and Saw Palmetto: what the published research says
PubMed indexes 8 records that name Finasteride and Saw Palmetto together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to Finasteride and Saw Palmetto. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
A study appearing here is not proof that an interaction exists. Two substances can be named together in a paper that never tested them in combination, and a source listed as background may cover only one of them.
Findings are quoted from each abstract as the authors wrote them. NutriStack has not re-analysed, pooled, or reconciled them, and they may disagree with each other.
NutriStack’s own interaction assessment for this pair is not published here. It has not completed qualified-human clinical review, so it is withheld from search. See the publication gate.
Nothing here is medical advice. Decisions about prescription medication and supplements belong with your prescriber or pharmacist, who can see your full regimen.
The research
8 studies naming Finasteride and Saw Palmetto.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
“We also clinically observed, that finasteride acts in both the front area and the vertex, while Serenoa repens prevalently in the vertex. Obviously other studies will be necessary to clarify the mechanisms that cause the different responses of these two treatments.”
Names both Finasteride and Saw Palmetto in its title.
“CP/CPPS treated with saw palmetto had no appreciable long-term improvement. In contrast, patients treated with finasteride had significant and durable improvement in all various parameters except voiding. Further studies are warranted to ascertain the mechanism and reproducibility of these effects in a placebo controlled trial.”
Names both Finasteride and Saw Palmetto in its title.
“For control versus finasteride-treated men, the tissue androgen values obtained with needle biopsy specimens were similar-both for absolute values and the percentage of change-to those previously reported using surgically excised volumes of prostatic tissue. The quantification of prostatic androgens by assay of needle biopsies is thus feasible and offers the possibility of serial studies in individual patients.”
Names both Finasteride and Saw Palmetto in its title.
“Finasteride was only capable of inhibiting the effect of androgens on rat prostate enlargement. LSESR inhibited not only the androgenic but also the trophic effect of PRL in rat LP hyperplasia.”
Names both Finasteride and Saw Palmetto in its title.
“However, the corresponding serum testosterone levels remained within the normal ranges. These data confirm the efficacy of finasteride as inhibitor of 5 alpha-reductase.(ABSTRACT TRUNCATED AT 250 WORDS)”
Names both Finasteride and Saw Palmetto in its title.
Urology research & practice · 2025 · PMID 40248996
“Palmex® for 6 months demonstrated to have a comparable efficacy to saw palmetto, finasteride, and tamsulosin in patients with mild and moderate BPH, being safe and well tolerated.”
Names both Finasteride and Saw Palmetto in its title.
Names both Finasteride and Saw Palmetto in its title.
Limitations
What this evidence cannot tell you.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
Selection. These records were found by searching PubMed titles and abstracts for both substance names alongside interaction and pharmacokinetic terms. Relevant work that phrases things differently, or is not indexed in PubMed, will be missing.
No effect size. The quoted conclusions are the authors’ words about their own study. We have not extracted effect direction or magnitude, and a single study’s conclusion is not a consensus.
Population mismatch. Findings in healthy volunteers, animals, or a specific patient group may not transfer to you, your dose, or your formulation.
Absence is not safety. Few published studies means the combination is under-studied, which is not the same as established as safe.
Nearby evidence
Other pairs with published research.
Pages covering Finasteride or Saw Palmetto alongside a different substance.
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Finasteride, Saw Palmetto, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.