If you're using Pain o soma 500mg for treating sleepiness caused by sleep apnea with obstruction it is possible to be treated using the continuously positive pressure (CPAP) machine. It is an air compressor that is attached to a mask that pushes air pressure into your nostrils while you rest. The air pump doesn't breath for you but the gentle flow of air keeps your airway clear to avoid obstruction.
Don't discontinue making use of your CPAP machine when you
are sleeping unless your physician tells you to. A combination treatment using
CPAP and modafinil could be needed to help cure your condition.