The surgeon and nurses will work closely together with you in order to prepare you for the procedure. You will meet for a consultation and assessment where you will be asked about your general health and any medications you take or previous operations. In some cases, your surgeon my order certain investigations such as e.g. EKG, X-ray or blood tests.

You will be asked to fast for 8 hours before the procedure.


The procedure begins with you receiving a local anaesthetic spray in your throat. You can also receive an intravenous sedative. The nurse will then insert a plastic ring between your teeth to hold your mouth open and, at the same time, protect your teeth. After this the endoscope will be inserted into your mouth and down into your stomach. This is not painful and you will be able to breathe without problems. It may be necessary to blow in air in order to obtain a better overview in your stomach. This can also cause a strange sensation and you may feel that you want to belch. The balloon is put down into your stomach and then it is inflated using a saline solution. Finally, the scope is inserted in the stomach one final time in order to double check that the balloon is in the correct position and correctly inflated.

You will be allowed to go home within one hour, but you MAY NOT drive a car or motorcycle for the rest of the day.

The gastric balloon can be emptied of fluid and removed at any time if this should be required.


If you experience exceeding or persistent nausea, vomiting or pain, then the volume of the gastric balloon can be reduced using an endoscopic adjustment.

If your appetite increases, or the weight loss flattens out and ceases, then the gastric balloon’s volume can be increased using an endoscopic adjustment.

The gastric balloon’s volume can be changed during a 15 minute endoscopic procedure. Preparation requires a liquid diet for a full 3 days prior to the adjustment, followed by fasting from midnight. Adjustments will be made under local anaesthetic. You will be discharged within one hour.


You may feel unwell and nauseous for he first 3-5 days after insertion of the gastric balloon. This will pass, particularly if you take the prescribed medication carefully and as directed. It is important that you take the medication before nausea occurs.

Together with the consultation, you will be instructed verbally and in writing about changing your diet and exercise, which are decisive for the gastric balloon treatment and a successful weight loss.


After 6 or 12 months (depending on the balloon type) the gastric balloon will be removed endoscopically under local anaesthesia. The date is agree upon in connection with the consultation. Preparation requires a liquid diet for a full 3 days prior to the procedure, followed by fasting from midnight. After the removal you will be discharged within one hour.


All treatment procedures are associated with risks for complications. Even though the risks are very small, everything will be done in order to reduce or prevent them. The risks include:

  • Stomach ulcers (can be prevented by taking stomach acid medication).
  • Diarrhoea or constipation (can easily be treated with different over the counter medications)
  • Aspiration pneumonia (occurs relatively rarely)
  • Perforation of the oesophagus or stomach (very rare)
  • Acid regurgitation and heartburn (can be prevented by taking stomach acid medication)
  • Puncturing of the gastric balloon and intestinal obstruction (takes place very rarely and is only described in the literature as individual cases)

You can read more about GastriBall’s scientifically documented effects here!

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