I always thought a gallbladder was 5cm so it looks more like 8cm. The big stone looks like the size I have so there is still room left. I once asked my doctor if the stone got too big if the gallbladder could explode :) but
he had no idea.
I used to take magnesium malate for night leg cramps but in the last 6 months I have switched to 2-3 pinches a day
of Epsom Salts and that is working well so far for the leg cramps and my gallbladder.