After lap band surgery, patients must follow a specific diet to maximize the success of the procedure and avoid complications. Immediately post-surgery, a liquid diet is followed by a progression to soft foods and, eventually, solid foods. The diet must be high in protein and low in sugar, with small, frequent meals to avoid overfilling the stomach pouch created by the band.

The "fat jab," also known as Saxenda or liraglutide, is an injectable weight-loss drug that has been approved for use on the NHS in the UK for individuals struggling with obesity. It is intended for use in conjunction with a reduced-calorie diet and increased physical activity. The medication helps control appetite, leading to weight loss. It is typically prescribed to those with a BMI over 30 or individuals with weight-related health problems.

Bread, Rice, and Pasta - Because of the starchy nature of bread, rice, and pasta, after your surgery, they can form a paste in your throat that is hard to swallow without liquid. In some cases, they can block the stoma, the hole to the pouch that is your new stomach. Currently, bariatric surgery is the most effective treatment for severe obesity and its metabolic complications; however, 15–35% of the patients that undergo bariatric surgery do not reach their goal for weight loss Longer term risks and complications... +More

A new stomach pouch or the size of your sleeve is not designed to hold a lot of food or fluid at one time. If you eat a decent amount of food (for a weight loss surgery patient) and then drink a bunch of water you could vomit simply because that liquid doesn't have anywhere else to go.