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Beta-sitosterol is found in many types of plants. It can be taken as a pill or used as a paste.


There are no advised doses for beta-sitosterol.

What Research Shows

Not Enough Data to Assess

  • Benign Prostatic Hyperplasia (Prostate Enlargement) A1, A2

Editorial process and description of evidence categories can be found at EBSCO NAT Editorial Process.

Safety Notes

It is likely safe to take beta-sitosterol over a short period of time. Not enough studies have been done to say whether it is safe to use for a long period.


Talk to your doctor about any supplements or therapy you would like to use. Some can interfere with treatment or make conditions worse.




A1. Wilt TJ, MacDonald R, et al. beta-sitosterol for the treatment of benign prostatic hyperplasia: a systematic review. BJU Int. 1999 Jun;83(9):976-983. Kim TH, Lim HJ, et al.

A2. Dietary supplements for benign prostatic hyperplasia: an overview of systematic reviews. Maturitas. 2012 Nov;73(3):180-185.

Last reviewed July 2019 by EBSCO NAT Review Board Eric Hurwitz, DC  Last Updated: 9/9/2019