The two main types of gallstones are: These medications don't work on pigment stones. You must take them several times a day; it can take months to start working. You may need to stay on this ...

Gallstones are broadly classified into 2 major types: cholesterol stones and pigment stones, with the former type being the most common. 5 They can develop either in the gallbladder or in the bile ...

Two types of gallstone exist: cholesterol stones formed from cholesterol-supersaturated bile (80–90% of gallstones); and pigment stones consisting mainly of polymerized calcium bilirubinate (10 ...