Does melatonin actually increase sleep time for adults with insomnia?

45
Pro
0
Against
Leans yes
1 min readUpdated May 17, 2026

What the Evidence Shows

Regarding 'Does melatonin actually increase sleep time for adults with insomnia?': The available evidence leans toward this being likely, but more research is needed for certainty.

The FitBodyScience database has analyzed 2 claim(s) related to this question: 90.0 support, 0 refute.

Evidence from Studies

1
Supporting (1)

Short-term melatonin supplementation, typically administered at doses ranging from 0.5 to 5 mg, significantly reduces sleep latency and improves subjective sleep quality in adults diagnosed with primary or comorbid insomnia disorders, as demonstrated by aggregated data from multiple systematic reviews and meta-analyses evaluating exogenous hormone administration for sleep initiation and maintenance.

The efficacy of melatonin and melatonin agonists in insomnia - An umbrella review.
study
45
Contradicting (0)
No contradicting evidence found
Primary Studies (1)

The efficacy of melatonin and melatonin agonists in insomnia - An umbrella review.

DOI: 10.1016/j.jpsychires.2019.10.022

Update History

Published
May 17, 2026·Last updated May 17, 2026