The deflated ORBERA balloon is placed in the stomach through the mouth using an endoscope, then inflated with a sterile saline solution. The deflated Obalon balloon is swallowed and then inflated with air. The entire procedure usually takes less than 30 minutes. In preparation for the balloon placement, patients will need to not eat for 24 hours before, and not consume liquids for 12 hours before, the procedure. A ride home will need to be pre-arranged because patients are given sedatives as part of the procedure.