Popular Sleep Aids Before Surgery May Reduce Post-Operative Pain and Opioid Use, Study Finds
Research presented at ANESTHESIOLOGY 2026 suggests that taking melatonin or Ambien prior to surgery could lead to less pain and anxiety during recovery.
Taking common sleep aids like melatonin or Ambien (zolpidem) before undergoing surgery may be associated with a reduction in post-operative pain, anxiety, and reliance on painkillers, according to new research.
The study, presented at the ANESTHESIOLOGY 2026 annual meeting, analyzed 16 studies involving over 1,100 patients who had undergone various surgical procedures between 2000 and 2025. The findings suggest that improved sleep through these aids could contribute to a smoother recovery.
Sleep Aids and Surgical Outcomes
Across the analyzed studies, melatonin, a naturally occurring hormone that regulates the sleep-wake cycle, was linked to decreased anxiety, pain, and inflammation. For patients undergoing abdominal surgery, melatonin use was associated with a more than 30% reduction in opioid use. Researchers noted that melatonin might offer an advantage over traditional sedatives for older adults, who can be more susceptible to post-surgical confusion. Studies employing activity monitors also indicated that patients who took melatonin experienced improved recovery and sleep patterns.
Ambien, a sedative that acts on the central nervous system, was also found to be beneficial. Patients with pre-existing sleep issues who took Ambien reported better sleep before surgery and experienced less pain afterward. Specifically, patients undergoing colorectal surgery required less opioid medication and exhibited lower inflammation levels when taking Ambien. Those who had hip replacement surgery reported less anxiety and depression and expressed greater satisfaction with their recovery.
Melatonin was typically administered the night before surgery or 20 to 90 minutes prior to anesthesia, with dosages ranging from 1 mg to 20 mg. Ambien was consistently dosed at 10 mg and taken at bedtime, either the night before surgery or for multiple nights leading up to the procedure.
The Link Between Sleep and Pain
Dr. Sebastian Amaya, a senior anesthesiology resident at Yale School of Medicine and senior author of the study, stated that the association between improved sleep and positive surgical outcomes was not surprising. He emphasized the critical role of sleep in overall health, including immune function, cognitive processes, and emotional well-being. Amaya explained that sleep influences how the brain processes pain, and disruptions in sleep can exacerbate pain perception.
"Pain is ultimately an experience," Amaya said, highlighting that individual factors and environmental influences shape pain levels. "Sleep also plays an important role in brain function, including the processes involved in how pain is experienced."
He further elaborated that hormonal pathways involved in sleep and pain are interconnected. Insomnia and other chronic sleep issues can disrupt these biological pathways, potentially leading to increased post-operative pain. Optimizing sleep before surgery, therefore, could mitigate this risk.
While the findings suggest a promising link between pre-operative sleep aid use and reduced post-surgical opioid consumption, Amaya cautioned that the research is a scoping review and does not provide conclusive clinical recommendations. The studies included did not follow patients long enough to assess long-term opioid use, an area that warrants further investigation.
Expert Perspectives
Dr. Wendy Troxel, a clinical psychologist and senior behavioral scientist at RAND, who was not involved in the study, found the results plausible from a sleep science perspective. She acknowledged that anxiety and poor sleep before major medical procedures are common. Troxel suggested that short-term use of sleep aids might be helpful for some patients.
However, she expressed some surprise at melatonin's demonstrated benefits, given that general evidence suggests limited effects for most individuals. Troxel also noted the potential role of placebo or expectancy effects in the context of a stressful pre-surgical environment.
Despite these considerations, Troxel concluded that the findings are noteworthy and could potentially benefit patient care. She advised patients considering sleep aids before surgery to consult with their surgical and anesthesia teams. Optimal sleep hygiene and addressing pre-existing sleep issues with primary care physicians before surgery were also suggested as beneficial steps.