What does the liver do?

Many things.: The liver is a complex organ that is a "detoxifier" of the body. Many chemical compounds are metablized here to rid the body of by-products that if built up, would be toxic. It helps to make medications work. It secretes digestive compounds and stores glycogen for the production of sugars and energy. There are many many more things that it does. It is resilient, impt & should not be abused.

Synthetic plant: Along with detoxifying, as dr. Proffitt said, the liver is a major site of protein synthesis for the body. It make albumin, the protein in your blood that maintains osmotic balance. It also makes many of the clotting factors that keep you from bleeding to death. That's why when you liver fails you bloat (due to loss of osmotic balance) and bleed (due to loss of clotting factors).

Right upper belly: The liver is in the right upper belly, actually protected by the lower ribs of the right side of the rib cage.