Saw Palmetto is probably the most researched ingredient in HorseWood's formula, with decades of study focused on men's urinary and prostate health specifically.
What It's Best Known For
Saw Palmetto berry extract has the most consistent research base around benign prostatic hyperplasia (BPH) — the non-cancerous prostate enlargement common in older men — and the urinary symptoms that come with it (frequent urination, weak stream, nighttime waking). A 2012 Cochrane systematic review of Serenoa repens (Saw Palmetto) trials found mixed results: some individual studies and higher-dose extracts showed symptom improvement over placebo, while a subset of larger, well-controlled trials did not find a significant difference.
The honest summary from that research: Saw Palmetto's evidence for prostate and urinary symptom support is real but inconsistent across studies — not a guaranteed effect, but not baseless either.
Why It's Relevant to Energy and Recovery
Frequent nighttime urination is a common, underrated driver of poor sleep in men over 40 — and poor sleep is one of the biggest contributors to daytime fatigue. Supporting healthy urinary function is one indirect but reasonable way an ingredient like Saw Palmetto can factor into an energy-and-recovery-focused formula, even though its primary research focus is prostate-specific.
The Libido/Testosterone Connection Is Weaker
Saw Palmetto has a mild effect on 5-alpha-reductase, an enzyme involved in converting testosterone to DHT. In theory, that mechanism could be relevant to prostate and hair health. In practice, the direct human evidence for a broader energy or performance benefit from Saw Palmetto alone is much thinner than its prostate research.
See HorseWood's Full 7-Ingredient Formula
Saw Palmetto works alongside Tongkat Ali, Boron, and 5 other botanicals.
See HorseWood Pricing & AvailabilityThe Bottom Line
Saw Palmetto is one of the better-evidenced ingredients in HorseWood's formula, with its strongest (if mixed) data pointing at prostate and urinary symptom support — a legitimate, useful role that can indirectly support better sleep and recovery.
Source: Tacklind J et al., "Serenoa repens for benign prostatic hyperplasia," Cochrane Database of Systematic Reviews, 2012.