GB-ToneGB Tone is a homeopathic combination formula for gallbladder symptoms. As a part of the biliary tree, the gallbladder plays an important role in digestion, particularly the digestion of fats. For symptoms such as abdominal discomfort, pain in the right shoulder, belching, sour taste in mouth, headaches, nausea, and constipation. Claims based on traditional homeopathic practice, not accepted medical evidence. Not FDA evaluated.