alli is an FDA approved weight loss pill that helps block about 25 percent of the fat you eat from being absorbed Acts as an effective weight loss pill for both women and men For every 5 pounds you lose through diet and exercise, alli can help you lose 2 to 3 more alli works in the digestive tract with minimal absorption into the bloodstream, meaning there is little to no effect on the cardiovascular and central nervous systems alli diet pills are a weight loss supplement for overweight adults, 18 years and older, when used along with a reduced calorie and low fat diet For weight loss in overweight adults, 18 years and older. When used along with a reduced-calorie and low-fat diet. HSA and FSA eligible product