The liver produces bile, which has many functions including elimination of waste processed by the liver and digestion of fat. The bile is temporarily stored in the gallbladder (an organ situated underneath the liver in the abdomen (belly) before it reaches the small bowel. Concretions in the gallbladder are called gallstones. Gallstones are present in about 5% to 25% of the adult western population. Between 2% and 4% become symptomatic in one year. The symptoms include pain related to the gallbladder (biliary colic), inflammation of the gallbladder (cholecystitis), obstruction to the flow of bile from the liver and gallbladder into the small bowel resulting in jaundice (yellowish discolouration of the body usually most prominently noticed in the white of the eye, which turns yellow), bile infection (cholangitis), and inflammation of the pancreas, an organ that secretes digestive juices and harbours the insulin-secreting cells that maintain blood sugar level (pancreatitis). Removal of the gallbladder (cholecystectomy) is currently considered the best treatment option for patients with symptomatic gallstones. This is generally performed by key-hole surgery (laparoscopic cholecystectomy). Generally, before being operated on, patients will be given informal information by the healthcare providers involved in the care of the patients (doctors, nurses, ward clerks, or healthcare assistants). This information is likely to include some information on the type of anaesthesia, expected duration of surgery, expected outcome of surgery including the complications, duration of hospital stay, wound dressing care (if applicable), return to normal activity, and return to work. This information can also be provided formally in different formats including written information, formal lectures, video, or computer presentations. The review authors set out to determine whether it is preferable to provide formal information to the patients before the operation.