Normal oxygen levels are generally between 99% and 95% during waking hours.  During the night your oxygen levels naturally drop because you don’t breathe as deeply while sleeping. Your oxygen saturation levels should ideally remain above 90%. If your saturation levels dip below 88% your doctor is likely to prescribe supplemental oxygen for nighttime use.  Many portable oxygen concentrators are equipped for use while sleeping.

This post was updated 8/22/16 to add more information and announce the Inogen One G4 is on sale!

Inogen is hands down one of the leading innovators in the oxygen industry. They sparked an oxygen therapy revolution with their first portable concentrator, the Inogen One and haven't looked back since. 

Chances are, you have probably seen or heard of the Inogen One line of portable oxygen concentrators. Whether it's the Inogen One, the Inogen One G2, or the Inogen One G3 they are easily the most popular line of portable oxygen concentrators on the market and for a good reason. Inogen has cemented their spot in the industry as having the most durable and reliable units you can buy. 

Today's post will be all about the incredibly popular and highly reliable Inogen One G2 portable oxygen concentrator. The G2 is for the medical oxygen patient that doesn't like to be confined to their home, and enjoy's traveling and socializing with friends. With the Inogen One G2 all those things can be accomplished with ease all while still receiving their prescribed amount of supplemental oxygen.

This review will be all about the third generation of the Inogen One. The Inogen One G3 portable oxygen concentrator comes in a slim and compact body that delivers a longer battery life all while still remaining lighter than the Inogen One G2. Coming standard with numerous user friendly features is what makes this machine so incredibly popular. If you are in the market for a new portable oxygen concentrator then the G3 will be one that you will want to check out before making your final decision.