Saw palmetto is an extract derived from the berries of the Serenoa repens plant, native to the southeastern United States. Traditionally used in herbal medicine, it is now widely recognized for its potential to support prostate health and combat hair loss. Its bioactive compounds, particularly fatty acids and phytosterols, are believed to reduce DHT levels, which can damage hair follicles.

Hair loss, especially androgenetic alopecia, is often linked to high levels of DHT, which shrinks hair follicles and hinders growth. Saw palmetto works by blocking the enzyme 5-alpha-reductase, responsible for converting testosterone into DHT. This action may slow hair loss and promote thicker, healthier hair growth, making it a natural alternative for those seeking to address hair thinning.

The typical dosage for saw palmetto supplements ranges from 160 to 320 milligrams per day, often standardized to contain 85–95% fatty acids for maximum efficacy. Clinical studies suggest these amounts are effective in reducing DHT levels, but it’s best to consult a healthcare professional for personalized advice before starting supplementation.

Saw palmetto is generally considered safe for most individuals when taken within recommended dosages. However, mild side effects such as stomach discomfort, headache, or dizziness may occur. Pregnant or breastfeeding individuals, as well as those taking certain medications like blood thinners or hormonal therapies, should consult a doctor before use.

To ensure you're getting high-quality saw palmetto, look for supplements that are third-party tested for purity and potency. Choose products with clear labeling, specifying standardized fatty acid content (85–95%) and free from additives, fillers, or artificial ingredients. Opt for reputable brands with transparent sourcing and manufacturing practices.