Why These Two Conditions Often Appear Together
Sleep apnea and anxiety frequently co-occur, and the relationship between them runs in both directions. Poor sleep quality from untreated or undertreated apnea can worsen anxiety symptoms, and chronic anxiety can make it harder to fall asleep, stay asleep, and tolerate CPAP therapy. When a provider recommends medication for anxiety in a patient who also has sleep apnea, a few important questions come into play.
How Some Anxiety Medications Affect Breathing During Sleep
The central concern with certain anxiety medications in patients with sleep apnea is respiratory depression — a slowing of the drive to breathe. This is most relevant with benzodiazepines (such as lorazepam, clonazepam, and diazepam) and sleep aids that work on similar receptors, like zolpidem.
These medications relax the central nervous system, which can reduce the respiratory arousal response — the brain’s ability to briefly wake itself when oxygen drops. In a person with obstructive sleep apnea, that arousal response is already compromised. Adding a medication that further blunts it can increase the frequency or duration of apnea events, even in patients on CPAP therapy.
This does not mean benzodiazepines are universally off-limits for patients with sleep apnea. But they do warrant careful consideration, appropriate dosing, and monitoring — particularly at the start of treatment.
Medications Generally Considered Lower Risk
Several anxiety medication classes have a more favorable profile for patients with sleep apnea:
SSRIs and SNRIs (such as sertraline, escitalopram, and venlafaxine) are typically first-line for anxiety disorders and do not carry the same respiratory depression risk.
Buspirone is a non-benzodiazepine anxiolytic that does not cause respiratory depression and is generally well-tolerated in patients with sleep apnea.
Hydroxyzine, an antihistamine sometimes used for short-term anxiety or sleep, has sedating effects but does not carry the same respiratory risk as benzodiazepines, though its sedative properties are still worth discussing with your provider.
Beta-blockers are occasionally used for situational anxiety and do not affect respiratory drive, though they are not appropriate for generalized anxiety disorder in most cases.
If You Are Already on a Benzodiazepine
Patients who were prescribed a benzodiazepine before their sleep apnea diagnosis — or whose sleep apnea was identified after anxiety medication was already established — should not stop the medication abruptly. Benzodiazepine discontinuation requires a supervised taper and should be managed by the prescribing provider.
If you are on CPAP therapy and taking a benzodiazepine, your sleep data may be worth reviewing, as some patients see changes in their AHI or leak rate that correlate with medication timing.
What to Raise With Your Provider
- Does this medication affect respiratory drive or arousal during sleep?
- Is there an alternative that carries less risk given my sleep apnea diagnosis?
- Should my sleep apnea treatment be reviewed or adjusted while starting this medication?
- Are there any symptoms I should watch for in the first few weeks?
If your anxiety is being managed by a different provider than the one overseeing your sleep apnea care, make sure both are aware of the full picture. Medication decisions made in isolation — without knowledge of a concurrent sleep apnea diagnosis or active CPAP use — can lead to avoidable problems.
CPAP Adherence and Anxiety
One detail that often gets overlooked: anxiety itself can be a significant barrier to CPAP adherence. Claustrophobia, hyperawareness of breathing, and difficulty tolerating the mask are all reported more frequently by patients with anxiety disorders. If anxiety is interfering with your ability to use CPAP consistently, that is worth addressing directly — both because undertreated sleep apnea worsens anxiety over time, and because the two issues reinforce each other.
Behavioral approaches, mask fitting adjustments, and in some cases a short-term bridge medication (chosen carefully given the considerations above) can all play a role in improving tolerance.
The Bottom Line
Managing sleep apnea and anxiety medication together requires coordination between providers and awareness of the specific risks involved. With the right information and an open conversation with your care team, most patients can find an approach that addresses both conditions safely.