Unlike other gastric balloons, no anesthesia or sedation is required in placing the Obalon balloon capsule in the stomach. The patient simply swallows the deflated capsule like a pill, with a glass of water. A thin tube attached to the capsule is used to inflate the balloon with gas once it is in the stomach. Obalon balloons are smaller and filled with gas, which is lighter than the saline solution used to fill other gastric balloons. Patients typically have fewer of the side effects experienced with larger, heavier gastric balloons, such as nausea and stomach discomfort. The three Obalon balloon capsules are placed in the stomach in separate office visits approximately one month apart. This gradual placement allows for easier adjustment and fewer side effects.