Taking plant sterols daily should be your first step in lowering LDL “bad” cholesterol. Plant sterols are naturally occurring substances found in plants. They work by blocking the absorption of cholesterol in the small intestine, which contributes to a significant decrease in the blood LDL “bad” cholesterol level. New research confirms that 1.6 g (2 tablets) Zerochol plant sterols can lower cholesterol by 17% in 3 months, without any side effects.