Lipozene is a dietary weight loss supplement, according to Everyday Health. It contains the active ingredient glucomannan, a fiber that comes from the konjac or elephant yarn plant. Glucomannan lowers blood sugar levels, promotes weight loss and relieves constipation.
Lipozene works by creating a feeling of fullness so the user eats less. This is because glucomannan fiber absorbs water like a sponge in the body and expands to fill the stomach, notes Everyday Health. Some adverse side effects have been reported when using glucomannan supplements including obstruction of the esophagus and obstruction of the lower gastrointestinal tract. In people with diabetes, glucomannan supplements may cause hypoglycemia.