Study
Melatonin May Reduce Delirium in Critically Ill Adults
Research indicates that melatonin supplements can lower the chances of delirium in critically ill patients by 25%.
Summary
In plain language
Recent research has shown that taking melatonin supplements might help reduce the risk of experiencing delirium if you are critically ill and staying in an intensive care unit (ICU). Delirium is a condition that causes confusion and changes in mental awareness, which can be quite serious for those in critical care. The study found that melatonin supplementation reduced the risk of delirium by 25% compared to those who did not take it. However, it did not significantly shorten the duration of delirium or affect the length of ICU stay or overall survival rates. For seniors, this research suggests that melatonin could be a helpful addition to care plans aimed at preventing delirium during hospital stays.
Details
Use the full description to understand the study design, methods, and the limits of the findings.
This study looked at whether melatonin could reduce delirium in ICU patients, a condition marked by confusion and memory issues, which is common in seniors.
- The study combined results from 22 trials, involving over 3,700 ICU patients, to see if melatonin or similar drugs could lower delirium rates.
- Results showed that melatonin did not significantly lower the incidence of delirium, challenging earlier smaller studies that suggested potential benefits.
- While melatonin is generally safe, seniors should be aware that it may not effectively prevent delirium in critical care settings.
Discuss these findings with your healthcare provider to explore the best strategies for preventing and managing delirium.
Full Study
Open the original publication for the complete methods, outcomes, and source material.
Melatonin May Reduce Delirium in Critically Ill Adults
Published January 2026 · DOI 10.3389/fphar.2026.1728873
Opens at the publisher · external site · may require institutional access
Research Quality Score
Scored October 22, 2026 using rubric mq-1.8_2026-07-06.
Assessment
The study scored well in study design and statistical integrity due to its rigorous meta-analytic approach and comprehensive statistical methods. Bias control was adequate but limited by some included studies' risk profiles. Transparency was high with pre-registration and PRISMA adherence. However, the absence of a funding statement and unspecified journal quality limited the conflicts and journal quality scores. Relevance was partial due to the inclusion of elderly subgroups but not exclusively seniors.
Category Breakdown
| Category | Score | Rating |
|---|---|---|
| Study design | 10.0/10 | |
| Bias control | 6.7/10 | |
| Statistical methods | 10.0/10 | |
| Reporting completeness | 10.0/10 | |
| Conflicts & funding | 7.5/10 | |
| Replication | 0.0/10 | |
| Relevance to chosen population | 5.0/10 | |
| Journal Reliability | 5.0/10 |
Additional Notes
This meta-analysis evaluated the effect of melatonin on delirium incidence in critically ill adults, finding a significant reduction in delirium incidence, especially in surgical and elderly patients, with higher doses being more effective.
Assessed on the study's full text across 8 quality dimensions; conflict-of-interest disclosures were reviewed.
Treatments Evaluated in This Research
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Supplements
Supplements help fill nutritional gaps and support healthy aging. For seniors, vitamins, minerals, and omega-3s can enhance bone strength, heart health, energy, and immune function when used safely under professional guidance.
Melatonin
Melatonin is a hormone that regulates the sleep–wake cycle. Supplemental melatonin supports better sleep quality and helps older adults maintain consistent rest patterns.
Melatonin Complex (with L-Theanine + Magnesium)
This combination of melatonin, L-theanine, and magnesium promotes relaxation, stress relief, and high-quality restorative sleep.
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