Homeopathy doesn't work like allopathic medicine. The remedy for you for your Gallstones is specific to your constitution. That means what might work for me for Gallstones or something else will not necessarily work for you because you are a different person.
Let me give you a different example. There is no such thing in homeopathy as a pain killer. That's because killing pain is just suppressing symptoms. Homeopathy does not work that way suppressing symptoms. Allopathic medicine works that way in suppressing symptoms. Homeopathy looks at the whole person to correct an imbalance. Homeopathy sets out to heal the underlysing problem. That's why for any given problem, like a headache, there will be a list of maybe 5 or 7 different remedies for a headache.