The best replacement for oxygen therapy is ozone therapy.

The best alternatives to oxygen therapy are rated as following:
★★★★★  ozone therapy
★★★★  cpap
★  compressed oxygen therapy

Your alternative for oxygen therapy is not listed? Suggest!
Speaking about oxygen therapy, one probably shouldn't forget about cpap.

Other search terms related to oxygen therapy and their ratings are:
★★★★★ cpap
★★★★ exercise
★ humidification
You have in mind a companion for oxygen therapy and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of oxygen therapy in all years. Click on graph for more.
oxygen therapy
ozone therapy
cpap