Travel health guide. Reviewed by Luis C. Palacios, MD, board-certified family physician.
How oxygen helps
Supplemental oxygen raises the oxygen level in the blood, quickly relieving headache and breathlessness caused by altitude.
When it is used
Oxygen is a first-line treatment for HAPE and moderate-to-severe AMS, often together with descent and medication.
Talk to a doctor
Oxygen saturation should be measured by a professional. If you develop symptoms at altitude, seek medical care rather than self-treating.
This information is educational and does not replace a medical visit. In an emergency, call 911.