The most common side effect is discomfort to the ears caused by pressure changes. To minimize the risk, patients learn to promote the adequate clearing of your ears during pressurization. Some patients may feel tired and dizzy after using hyperbaric chamber for the first time. It`s a good signal as Hyperbaric Oxy-gen Therapy will speeds up the metabolism of our body, just like people feel tired after a long running. They are usually good signs of indicating detoxification.