Beta-sitosterol is a plant sterol found naturally in fruits, vegetables, nuts, and seeds. Its shape looks much like cholesterol, which lets it compete for absorption in the gut. Many men take it to steady urinary comfort and keep urine flow normal as part of a prostate health routine. People also use it to help hold cholesterol levels within a healthy range.
Take beta-sitosterol with meals. A meal that includes some fat helps your body absorb it better. You can find it in capsules, tablets, and softgels. Most people need several weeks of steady use before they notice the effects.
Some people experience nausea or loose stools. This sterol can cut down how well your body absorbs fat-soluble vitamins. It interacts with cholesterol-lowering drugs, so check with your doctor. If you have sitosterolemia, a rare condition, avoid beta-sitosterol.