GLP-1 drugs and sleep apnea

Weight and sleep apnea

Obstructive sleep apnea happens when the airway repeatedly narrows or closes during sleep. Excess weight around the neck and abdomen is one of the strongest risk factors.

Severity is measured by the apnea-hypopnea index, or AHI: the number of breathing pauses or drops per hour of sleep. 15 to 29 is moderate; 30 or more is severe.

What SURMOUNT-OSA found

Two 52-week trials tested tirzepatide in adults with obesity and moderate to severe sleep apnea, one in people not using PAP therapy and one in people using it.

That was roughly a halving of AHI on average, and some participants no longer met criteria for moderate to severe apnea. Figures are rounded from the published NEJM paper.

What the approval covers

The FDA approved Zepbound for moderate to severe obstructive sleep apnea in adults with obesity, alongside a reduced-calorie diet and increased physical activity. As of our last review, it's the only drug approved for this use. Mounjaro, the same ingredient, is approved for type 2 diabetes.

The label sets the dose steps; see Zepbound dosage or the dose schedule tool.

Signs you may have sleep apnea

Many people with sleep apnea don't know they have it. Common signs:

• Loud snoring, often reported by a partner
• Pauses in breathing, gasping or choking during sleep
• Waking with a dry mouth or morning headache
• Daytime sleepiness, such as nodding off while reading or driving
• High blood pressure that is hard to control
• Waking often at night to urinate

A diagnosis needs a sleep study, either in a lab or with a home test your doctor orders. The study gives your AHI, which also decides whether Zepbound's sleep apnea approval applies to you. Check your BMI with the BMI calculator before your appointment.

Does it replace CPAP

Not automatically. CPAP works from the first night, while the drug's effect builds over months. Many people in the trial kept using PAP. Only your sleep doctor can decide whether you can reduce or stop PAP, usually after a repeat sleep study.

Coverage

Because sleep apnea is a medical condition separate from weight management, some plans, including Medicare Part D plans, can cover Zepbound for this use. Expect a prior authorization asking for a sleep study and BMI. See Medicare and GLP-1s and Zepbound insurance.

When to call your doctor

• Loud snoring, gasping at night or daytime sleepiness, to ask about a sleep study
• Before changing or stopping CPAP
• Severe stomach pain or other serious side effects while on Zepbound