During the first two months following surgery, many patients will probably experience a few episodes of vomiting. This is because the stomach capacity is reduced to approximately 20 mL and can be easily overwhelmed. We advise patients to eat slowly and stop when full. Meals usually take up to 45 minutes to eat. Vomiting may occur if you eat too quickly, fail to chew your food adequately or eat inappropriate foods.
By following the dietary advice strictly, you will alleviate these problems.
Another common experience in patients who have had gastric bypass surgery can be vomiting white, frothy material early each morning. This is actually normal saliva.
After surgery, patients are obviously consuming a much smaller quantity of food and therefore requiring a much smaller quantity of saliva than the glands are used to producing.
Nausea is a side effect of the gastric bypass operation.
This is the side effect from the operation that is responsible for some of the massive rapid weight loss that is seen after the gastric bypass operation. Nausea can be alleviated by eating at least three or four small meals a day and drinking at least three to four cups of water a day.