
Beta-sitosterol is a cholesterol-like substance derived from plants (phytosterol) that does not act like cholesterol. Instead, it acts like the prescription drug finasteride (Proscar), which inhibits the activity of an enzyme called 5-alpha-reductase and is used to manage symptoms associated with BPH, such as urinary frequency, urinary urgency, and flow problems. Some men, however, take beta-sitosterol for to reduce symptoms of prostatitis. A typical dose of beta-sitosterol is 60 to 135 mg daily, and it usually takes about four weeks before symptoms improve. Potential side effects include diarrhea, gas, and nausea. Read more on beta-sitosterol and prostatitis























