How long does it take for you to feel a difference when using a cpap machine for sleep apnea?

Varies: For some it is immediate and for others over a week or two. Is one does not note benefit consider the following. Is the diagnosis correct or was it CPAP given for mildly elevated ahi on a sleep test? Are there any problems with fit or comfort that may preclude a great result? Is there sufficient sleep or is one not sleeping long enough? See your sleep physician for initial followup visit...

Can be immediate: Many of my patients tell me the first time they used CPAP they woke up the next morning feeling better than they had in years.

Depends: An adjustment period usually takes place when first getting used to a CPAP machine or one of its other varieties. It can take awhile or you may never get used to it. Be patient and also focus on lifestyle changes that can also help.

Depends: It depends. Some people feel an immediate effect, others take time. It does depend on how severe the apnea is too. Continue to use CPAP and follow up with your sleep physican for compliance and to make sure the pressure is adequate to treat your apnea.