奥利司他即四氢利泼斯汀，通过抑制脂肪酶起作用，脂肪酶是一种在肠道内分解甘油三酯的胰酶。

• Orlistatis also known as tetrahydrolipstatin, and works by slowing down therelease of lipase, a pancreatic enzyme that breaks down fattytriglycerides in the gut.