Melatonin for Surgery: A Guide to Perioperative Use
Many patients experience anxiety and sleep disruptions before and after a medical procedure. Research is exploring how melatonin, a natural hormone, may help manage these challenges.
What the Research Shows
Research suggests that melatonin may be a helpful tool for managing the emotional and physical stress associated with surgery.
For many patients, the period before a procedure is marked by significant stress. Meta-analyses of adults indicate that melatonin can be used as an alternative to benzodiazepines to reduce preoperative and postoperative anxiety (PMID: 33319916, PMID: 25856551). In pediatric patients, studies have compared melatonin to midazolam, exploring its effectiveness in reducing distress and improving compliance in children awaiting elective surgery (PMID: 40622250, PMID: 28540436).
Beyond anxiety, studies indicate that melatonin may support recovery in several specific ways:
- Cognitive Health: A systematic review and meta-analysis suggests that perioperative melatonin or melatonin agonists may be effective in preventing postoperative delirium (POD) (PMID: 38735057). Other research indicates it may ameliorate postoperative neurocognitive disorder in elderly patients undergoing prostate surgery (PMID: 39729834).
- Sleep Quality: Clinical trials suggest melatonin can improve sleep quality and patient-reported outcomes following arthroscopic rotator cuff surgery (PMID: 39279257) and orthopedic trauma (PMID: 36424687).
- Inflammation and Healing: In cardiac surgery, research suggests melatonin may influence serum levels of inflammatory markers like interleukin 6 and 9 (PMID: 33081432) and protect against ischemia-reperfusion injury (PMID: 35817673). Additionally, topical melatonin-loaded gels have been studied for improving palatal wound healing (PMID: 38688801).
It is important to note that results are not universal; for example, one randomized trial found that oral melatonin did not reduce anxiety specifically before elective hernia repair (PMID: 36106858).
Effective Dosage
While the provided clinical summaries confirm the use of oral and topical melatonin in various surgical settings, they do not specify standardized dose ranges. Because dosing can vary significantly based on the type of surgery, the patient's age, and the specific goal (such as anxiety reduction versus delirium prevention), patients should consult their surgical team for a specific protocol.
Safety & Side Effects
Research generally describes melatonin as an atoxic alternative to stronger sedative medications like benzodiazepines for managing anxiety (PMID: 25856551). It is often noted for having relatively minor adverse effects (PMID: 39279257). However, patients should be aware that any supplement can interact with anesthesia or other medications. Always disclose the use of melatonin to your anesthesiologist and surgeon to ensure safety during the perioperative period.
Key Takeaways
- Research suggests melatonin may reduce preoperative and postoperative anxiety in both adults and children (PMID: 33319916, PMID: 40622250).
- Studies indicate it may help prevent postoperative delirium and improve sleep quality after orthopedic and cardiac procedures (PMID: 38735057, PMID: 39279257).
- Melatonin is generally viewed as a low-toxicity alternative to certain sedative drugs (PMID: 25856551).
- Always consult a healthcare provider for specific dosing and to check for potential drug interactions before surgery.