EVIDENCE LIBRARY
Colorectal-Cancer Sleep Trial Found Similar Short-Term Patterns With Zolpidem and Melatonin
A single-blind trial reported improved sleep during treatment with zolpidem or melatonin, followed by worsening after treatment stopped. It did not establish a meaningful improvement in anxiety or depression.
A single-blind trial reported improved sleep during treatment with zolpidem or melatonin, followed by worsening after treatment stopped. It did not establish a meaningful improvement in anxiety or depression.
Population and follow-up
Shahrokhi and colleagues studied patients receiving chemotherapy for colorectal cancer who had poor sleep scores. The reported analyzed groups contained 45 patients each. Participants received zolpidem or melatonin for 30 days, with assessments at baseline and weeks four and eight.
Sleep measures improved at week four in both groups. After treatment stopped, the improvements reversed noticeably by week eight. The paper described broadly similar effects on several dimensions of sleep.
Distinguishing outcomes within the same paper
The abstract’s results state that neither medication had a considerable influence on anxiety and depression. That specific result should guide interpretation even though the conclusion uses more optimistic language about those symptoms.
Improvement in a sleep questionnaire cannot automatically be carried over to mood, objective performance, or medication safety. Each outcome requires its own measurement and comparison.
What limits the comparison
There was no placebo group, so the design cannot fully distinguish drug effects from other changes occurring during treatment. The authors also identify short treatment and follow-up periods and incomplete knowledge of patients’ sleep and mental status before cancer treatment or diagnosis.
The findings apply to a selected chemotherapy population and the studied regimens. They do not establish equivalence for all insomnia patients or validate any inference about driving ability or concentration-related impairment. Zolpidem is a non-benzodiazepine hypnotic; its receptor relationship does not make it chemically identical to conventional benzodiazepines.
Source
Based on the supplied paper: Comparing the Effects of Melatonin and Zolpidem on Sleep Quality Depression and Anxiety in PatientsW. PMC8114863.