Saw Palmetto

At a Glance

Common name

Saw Palmetto

Scientific name

Serenoa repens

Family

Arecaceae

Region

North America

Plant part

Dried berries (fruit)

Caffeine

Caffeine Free

Evidence

Conflicting

Safety review

Safety information on file

Botanical Description

A low-growing fan palm 1–3 m tall with stiff, saw-toothed petioles and large, divided fan-shaped fronds. Creamy-white flowers give way to olive-sized berries that ripen to deep blue-black and carry a pungent, slightly soapy odor.

Also known as: Dwarf Palmetto, Sabal

Historical Background

The berries were a staple food and medicine of the Seminole, Miccosukee, and other Indigenous peoples of the southeastern United States. Saw palmetto entered eclectic medical practice in the late 19th century as a 'glandular tonic' and became, by the late 20th century, one of the most widely used herbal supplements in the world for prostate-related urinary symptoms.

Earliest recorded uses: Indigenous use of the berries as food and for urinary and reproductive complaints; adopted by American eclectic physicians in the 1870s.

Cultural significance: The palm's fronds provided fiber and thatch, while its berries were a survival food. It became the defining herb of the 'male tonic' tradition in American eclectic medicine and remains culturally emblematic of men's herbalism.

1. Pre-colonial

   Indigenous peoples of the SE US use berries for food and urinary complaints.

2. 1870s

   Adopted by eclectic physicians as a reproductive organ tonic.

3. 1990s–2000s

   Becomes a top-selling herbal supplement for BPH symptoms in Europe and the US.

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Flavor & Aroma

Aroma: Pungent, slightly rancid, earthy

Tea Preparation

Modern Evidence

Saw palmetto is among the most studied herbs for benign prostatic hyperplasia (BPH) symptoms. Early European trials suggested benefit, but the largest, highest-quality trial — the 2011 NIH-funded CAMUS study — found that saw palmetto extract was no better than placebo for improving urinary symptoms. Evidence is therefore conflicting, and it should not be relied upon as a substitute for medical evaluation of prostate or urinary symptoms.

Evidence levels describe the state of research for the traditional use discussed here, not a recommendation. Historical use does not imply effectiveness.