Oxygen is prescribed when your oxygen level falls too low — at rest, while walking, or during sleep. It is not addictive, and using it when needed protects your heart and helps you stay active.

Checking your oxygen level

  • Sit and rest for a few minutes first.
  • Warm your hands; remove nail polish.
  • Wait until the reading is steady.
  • Ask your doctor what your own target range is, and note your usual readings.

Oxygen safety

  • No smoking — by you or anyone near you.
  • Keep oxygen away from gas stoves, lamps, candles and incense.
  • Don't use oil-based creams or petroleum jelly on your face.
  • Store cylinders upright in a ventilated place.