Clerosterol Products | Cleanchem - Clerosterol is a phytosterol, a plant-derived compound structurally similar to cholesterol. It is commonly used as a supplement for lowering cholesterol levels and improving heart health by blocking the absorption of dietary cholesterol in the intestines. Clerosterol also has potential antioxidant and anti-inflammatory effects, which may contribute to general cardiovascular protection. Side effects are generally rare but could include gastrointestinal discomfort or allergic reactions in sensitive individuals.