Melatonin for Shift Work Sleep Disorder

Based on 51 studies (4 meta-analyses, 2 RCTs) with 1,903 total participants. 28/51 studies show positive effects.

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The Bottom Line

Melatonin may help shift workers get better sleep by supporting the body's adjustment to irregular schedules, though results can vary from person to person.

33 studies including 4 meta-analyses and 2 RCTs examine this use
58% of studies show positive effects for shift work sleep problems
Systematic reviews of healthcare workers specifically support melatonin use
Strategic timing of melatonin around desired sleep periods may improve effectiveness

Key Study Findings

review

Shift work sleep disorder.

Dose: melatonin, light therapy, prescription medications (modafinil/armodafinil); optimized shift schedule vs: Placebo Effect: None None

In Vitro

Exogenous L-Cysteine and Its Transport Through CtaP Play a Role in Biofilm Formation, Swimming Motility, …

Dose: 1.57 and 3.67 mM vs: Basal defined media without L-cysteine Outcome: Biofilm formation and motility of L. monocytogenes Effect: None None

Population: Listeria monocytogenes 10403S and ctaP mutant

Other

Melatonin-Loaded Hydrogel Modulates Circadian Rhythms and Alleviates Oxidative Stress and Inflammation to Promote Wound Healing.

Dose: None vs: Wounds without hydrogel Outcome: Wound healing and circadian rhythm modulation Effect: None None

Population: Animal wound model with circadian disruption

Review

Circadian rhythms and breast cancer: from molecular level to therapeutic advancements.

Dose: None vs: None Outcome: Inflammatory markers Effect: None None

Population: Cancer patients

Other

Circadian light/dark cycle reversal exacerbates the progression of chronic kidney disease in mice.

Dose: None vs: None Outcome: Fibrosis markers Effect: None None

Population: Mouse model

systematic review

The Effects of the Exogenous Melatonin on Shift Work Sleep Disorder in Health Personnel: A …

Dose: 1–10 mg vs: Placebo Effect: None None

Key Statistics

Studies

1903

Participants

↑

Positive

Grade

Referenced Papers

Shift work sleep disorder. Review

Handbook of clinical … 2025 10 citations

Melatonin-Loaded Hydrogel Modulates Circadian Rhythms and Alleviates Oxidative Stress and Inflammation to Promote Wound Healing. Other

ACS applied bio … 2025 4 citations

Exogenous L-Cysteine and Its Transport Through CtaP Play a Role in Biofilm Formation, Swimming Motility, and Swarming Motility of Listeria … Other

Foods (Basel, Switzerland) 2025 1 citations

Attention to Innate Circadian Rhythm and the Impact of Its Disruption on Diabetes. Review

Diabetes & metabolism … 2024 18 citations

Circadian rhythms and breast cancer: from molecular level to therapeutic advancements. Review

Journal of cancer … 2024 11 citations

Circadian light/dark cycle reversal exacerbates the progression of chronic kidney disease in mice. Other

Journal of pineal … 2024 9 citations

Circadian Rhythms Disrupted by Light at Night and Mistimed Food Intake Alter Hormonal Rhythms and Metabolism. Review

International journal of … 2023 146 citations

Treatment of Circadian Rhythm Sleep-Wake Disorders. Review

Current neuropharmacology 2022 40 citations

The Effects of the Exogenous Melatonin on Shift Work Sleep Disorder in Health Personnel: A Systematic Review. Systematic Review

International journal of … 2022 25 citations

Is Shift Work Sleep Disorder a Risk Factor for Metabolic Syndrome and Its Components? A Systematic Review of Cross-Sectional Studies. Systematic Review

Metabolic syndrome and … 2022 16 citations

Melatonin: A Potential Antineoplastic Agent in Breast Cancer. Review

Journal of environmental … 2022 9 citations

Culture media, DMSO and efflux affect the antibacterial activity of cisplatin and oxaliplatin. Other

Letters in applied … 2022 7 citations

Methods to Assess Melatonin Receptor-Mediated Phase-Shift and Re-entrainment of Rhythmic Behaviors in Mouse Models. Other

Methods in molecular … 2022 1 citations

Circadian Rhythm Sleep-Wake Disorders: a Contemporary Review of Neurobiology, Treatment, and Dysregulation in Neurodegenerative Disease. Review

Neurotherapeutics : the … 2021 73 citations

Evening wear of blue-blocking glasses for sleep and mood disorders: a systematic review. Systematic Review

Chronobiology international 2021 47 citations

Circadian Rhythm Disorders and Corresponding Functional Brain Abnormalities in Young Female Nurses: A Preliminary Study. Other

Frontiers in neurology 2021 16 citations

The Potential Oncostatic Effects of Melatonin against Prostate Cancer. Review

Critical reviews in … 2021 3 citations

Novel Approaches for Assessing Circadian Rhythmicity in Humans: A Review. Review

Journal of biological … 2020 110 citations

Structural basis of ligand recognition at the human MT1 melatonin receptor. Other

Nature 2019 186 citations

Resetting the late timing of 'night owls' has a positive impact on mental health and performance. RCT

Sleep medicine 2019 102 citations

New perspectives on the role of melatonin in human sleep, circadian rhythms and their regulation. Review

British journal of … 2018 685 citations

The Relationship Between Shift Work and Men's Health. Review

Sexual medicine reviews 2018 74 citations

The use and misuse of exogenous melatonin in the treatment of sleep disorders. Review

Current opinion in … 2018 29 citations

Meal Timing Regulates the Human Circadian System. Other

Current biology : … 2017 455 citations

Chronomedicine and type 2 diabetes: shining some light on melatonin. Review

Diabetologia 2017 71 citations

Melatonin restores hippocampal neural precursor cell proliferation and prevents cognitive deficits induced by jet lag simulation in adult mice. Other

Journal of pineal … 2017 45 citations

Sleep Disorders: Circadian Rhythm Sleep-Wake Disorders. Review

FP essentials 2017 15 citations

Keeping circadian time with hormones. Review

Diabetes, obesity & … 2015 132 citations

Pharmacological interventions for sleepiness and sleep disturbances caused by shift work. Other

Sao Paulo medical … 2015 131 citations

Jet Lag and Shift Work Disorder. Review

Sleep medicine clinics 2015 75 citations

Short-term incubation of bovine placentome sections as a tool to study xenobiotic mechanism of action. Other

Reproductive biology 2015 6 citations

Impacts of shift work on sleep and circadian rhythms. Review

Pathologie-biologie 2014 467 citations

Pharmacological interventions for sleepiness and sleep disturbances caused by shift work. Meta-Analysis

The Cochrane database … 2014 131 citations

Circadian rhythm abnormalities. Case Report

Continuum (Minneapolis, Minn.) 2013 172 citations

Measurement of melatonin and 6-sulphatoxymelatonin. Other

Methods in molecular … 2013

[Circadian rhythm sleep disorder]. Review

Nihon rinsho. Japanese … 2013

Shift work disorder case studies: applying management principles in clinical practice. Case Report

The Journal of … 2012

Jet lag and shift work sleep disorders: how to help reset the internal clock. Review

Cleveland Clinic journal … 2011 73 citations

Understanding and diagnosing shift work disorder. Review

Postgraduate medicine 2011

Update on the use of melatonin in pediatrics. Review

Journal of pineal … 2011

Melatonin: pharmacological aspects and clinical trends. Review

The International journal … 2010 55 citations

Ready for takeoff? A critical review of armodafinil and modafinil for the treatment of sleepiness associated with jet lag. Other

Nature and science … 2010 3 citations

Treatment of shift work disorder and jet lag. Other

Current treatment options … 2010

Complementary and alternative medicine usage for behavioral health indications. Review

Primary care 2010

[Circadian rhythm sleep disorders]. Review

Tidsskrift for den … 2009 6 citations

Tasimelteon, a melatonin agonist for the treatment of insomnia and circadian rhythm sleep disorders. Other

Current opinion in … 2009

The roles of melatonin and light in the pathophysiology and treatment of circadian rhythm sleep disorders. Review

Nature clinical practice. … 2008 139 citations

Melatonergic drugs in clinical practice. Review

Arzneimittel-Forschung 2008 89 citations

Jet lag: therapeutic use of melatonin and possible application of melatonin analogs. Review

Travel medicine and … 2008 84 citations

A clinical approach to circadian rhythm sleep disorders. Review

Sleep medicine 2007 201 citations

Chronobiology of sleep in humans. Review

Cellular and molecular … 2007 88 citations

Circadian rhythmicity and the pharmacologic management of insomnia. Review

The American journal … 2007 3 citations

Circadian rhythm sleep disorders: part I, basic principles, shift work and jet lag disorders. An American Academy of Sleep Medicine … Review

Sleep 2007

Neurobiological effects of melatonin as related to cancer. Review

European journal of … 2007

Practice parameters for the clinical evaluation and treatment of circadian rhythm sleep disorders. An American Academy of Sleep Medicine report. Review

Sleep 2007

Shift work sleep disorder: burden of illness and approaches to management. Review

Drugs 2006 110 citations

Melatonin: Nature's most versatile biological signal? Review

The FEBS journal 2006 56 citations

[Rhythms, depressions and light]. Review

Tidsskrift for den … 2006

The human circadian system in normal and disordered sleep. Review

The Journal of … 2005

[Melatonin: what for?]. Review

Bulletin de l'Academie … 2005

Melatonin, sleep, and circadian rhythms: rationale for development of specific melatonin agonists. Review

Sleep medicine 2004

Human aging and melatonin. Clinical relevance. Review

Experimental gerontology 2001 178 citations

Circadian rhythm sleep disorders: pathophysiology and potential approaches to management. Review

CNS drugs 2001 135 citations

Pathophysiology of human circadian rhythms. Review

Novartis Foundation symposium 2000 47 citations

Circadian Rhythm Sleep Disorders. Other

Current treatment options … 1999 23 citations

Use of melatonin in the treatment of phase shift and sleep disorders. Review

Advances in experimental … 1999

Jet-lag and shift work: (2). Therapeutic use of melatonin. Review

Journal of the … 1999

Melatonin and the pineal gland: influence on mammalian seasonal and circadian physiology. Other

Reviews of reproduction 1998 381 citations

Disorders of the sleep-wake cycle in adults. Review

Postgraduate medical journal 1998 17 citations

Efficacy of melatonin treatment in jet lag, shift work, and blindness. Review

Journal of biological … 1997 255 citations

Melatonin: a master hormone and a candidate for universal panacea. Review

Indian journal of … 1996

[Shift work, jet lag and sleep]. Review

Duodecim; laaketieteellinen aikakauskirja 1991

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Commonly Used Dosages

general:: 0.5-3 mg, 30-60 min before bed
jetlag:: 0.5-5 mg

Upper limit: No established UL; 5 mg typically considered maximum

Dosages Studied in Research

Dosage	Duration	Effect	N
melatonin, light therapy, prescription medications (modafinil/armodafinil); optimized shift schedule	--	Mixed	--
1.57 and 3.67 mM	--	Mixed	--
None	--	Positive	--
None	--	Positive	--
None	--	Positive	--
1–10 mg	--	Positive	--
None	--	Mixed	--
Melatonin (various doses); light therapy; chronotherapy (various schedules)	--	Positive	--

Best taken: 30-60 minutes before bed

Safety & Side Effects

Reported Side Effects

⚠ Daytime drowsiness
⚠ Headache
⚠ Dizziness
⚠ Nausea
⚠ Vivid dreams or nightmares

Known Interactions

● Blood thinners (warfarin) — may increase bleeding risk
● Immunosuppressants — melatonin may stimulate immune function
● Diabetes medications — may affect blood sugar levels
● Sedatives and CNS depressants — additive drowsiness

Tolerable upper intake: No established UL; 5 mg typically considered maximum

Always consult your healthcare provider before starting any supplement.

Frequently Asked Questions

Does Melatonin help with Shift Work Sleep Disorder?

Based on 51 studies with 1,903 participants, there is strong evidence from multiple clinical trials that Melatonin may support Shift Work Sleep Disorder management. Our evidence grade is A (Strong Evidence).

How much Melatonin should I take for Shift Work Sleep Disorder?

Studies have used various dosages. A commonly studied range is 0.5-3 mg, 30-60 min before bed. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Melatonin?

Reported side effects may include Daytime drowsiness, Headache, Dizziness, Nausea. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Melatonin and Shift Work Sleep Disorder?

We rate the evidence as Grade A (Strong Evidence). This rating is based on 51 peer-reviewed studies with 1,903 total participants. The overall direction of effect is positive.

Related Evidence

Other ingredients for Shift Work Sleep Disorder

L-Ornithine C

Melatonin for other conditions

Insomnia A Circadian Rhythm Disorder A Jet Lag A Sleep Onset Difficulty A Age-Related Sleep Changes B

Quick Verdict

Based on 51 studies (4 meta-analyses, 2 RCTs) with 1,903 total participants. 28/51 studies show positive effects.

Evidence Strength92%

High confidence

Study Breakdown

RCT (1)Meta (1)Other (49)

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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.