The results showed that only 38% of patients treated with Serenoa repens had an increase in hair growth, while 68% of those treated with finasteride noted an improvement. Moreover finasteride was more effective for more than half of the patients (33 of 50, i.e. 66%), with level II and III alopecia. We can summarize our results by observing that Serenoa repens could lead to an improvement of androgenetic alopecia, while finasteride confirmed its efficacy. 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.
Comment: As significant, hair growth was produced using the weakest form of Saw Palmetto, the 320 mg dose of lipid sterolic extract. More concentrated, critical extracts of Saw Palmetto, particularly when combined with higher doses of Beta Sitosterol, above and beyond what naturally occurs in Saw Palmetto, are documented to produce better treatment outcomes for BPH compared to the standard, lipid sterolic extract. If prostate research (which provided the original hair growth cues for both Propecia and Avodart) is any indication, these newer, multi-component formulations will invariably produce better hair growth results as well.
Source: Saw Palmetto vs Propecia