Eden Apothecary · Herb Profile
Serenoa repens
Pronounced Saw Palmetto: saw pal-MET-oh. Serenoa repens: seh-reh-NOH-ah REE-penz.
Warm, moist, and building: an oily reproductive and genito-urinary trophorestorative that nourishes and re-tones thin, wasted, atrophic, atonic tissue rather than draining it.
No pre-1900 source found for this reading.
Avoid. Saw palmetto acts on sex hormones (androgen and estrogen metabolism, with proposed 5-alpha-reductase inhibition analogous to finasteride, a known teratogen), so it is considered possibly unsafe in pregnancy and may interfere with normal fetal, especially male genital, development. NCCIH states saw palmetto may be unsafe for use during pregnancy or while breastfeeding. No adequate human pregnancy safety data exist. Do not use. (NCCIH; MedlinePlus / Natural Medicines Comprehensive Database.)
Avoid. Its hormonal activity and the absence of lactation safety data make it inappropriate during breastfeeding; NCCIH advises it may be unsafe while breastfeeding, and no data establish the safety of the transfer of its constituents into milk. Prefer better-studied alternatives. (NCCIH; MedlinePlus / Natural Medicines Comprehensive Database.)
Not recommended. Saw palmetto has hormonal (anti-androgen) activity and no established pediatric safety data; it is inappropriate for children and adolescents, whose developing endocrine systems could be affected. (NCCIH; MedlinePlus / Natural Medicines Comprehensive Database.)
Generally well tolerated. Mild, infrequent, and reversible adverse effects include digestive upset, nausea, dizziness, and headache; take with food to reduce stomach upset (NCCIH; Agbabiaka 2009 systematic review). Because it acts on sex hormones (proposed 5-alpha-reductase inhibition and anti-androgen activity), it may lower libido in some users and can theoretically affect hormone-sensitive conditions. Modern controlled trials (Cochrane 2012) found it no better than placebo for BPH symptoms even at two to three times the usual dose, so it is not a substitute for evaluation of urinary symptoms. Rare case reports describe hepatitis, pancreatitis, and bleeding events. It does not appear to lower prostate-specific antigen (PSA), so it does not mask PSA-based screening (NCCIH), but men should still be evaluated before self-treating urinary symptoms.
Pregnancy and lactation (hormonal activity; see safety fields). Hormone-sensitive conditions, and any undiagnosed urinary symptoms in men (rule out prostate cancer before self-treating BPH). Discontinue at least two weeks before scheduled surgery because of a possible bleeding risk. Known hypersensitivity to saw palmetto.
Wild-harvested almost entirely from Florida, where saw palmetto berries are the single most important food for the Florida black bear and vital forage for many other species. Florida designates saw palmetto a Commercially Exploited plant: commercial berry harvest requires a free native-plant harvesting permit from the Florida Department of Agriculture (FDACS) plus the landowner's written permission, and harvest on state-managed lands is prohibited. Buy only from permitted, legal, sustainably managed, or cultivated sources; avoid berries from poached or protected wild stands.
Not in canonical biblical texts and unknown to the ancient Mediterranean world. Native to the coastal plain of the southeastern United States (Florida especially), where the berry was a staple food and a genito-urinary and reproductive remedy of the Seminole and other Native peoples. It entered professional Western practice through the American Eclectic physicians in the late nineteenth century (King's American Dispensatory, 1898).
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