OtherResearch profile

Melatonin

N-acetyl-5-methoxytryptamine · MT

Think of it as your body's natural bedtime signal.

Melatonin is like your body's natural bedtime story, helping to tell your brain when it's time to drift off to sleep. Produced in your brain's pineal gland, it's the hormone that gets released when it starts getting dark, signaling that it's time to wind down. This can be especially helpful if your internal clock is out of sync, like when you're traveling across time zones or staying up too late binge-watching your favorite series.

Beyond sleep, melatonin has a bit of a superhero side. It's known for its antioxidant properties, which means it helps to combat some of the harmful effects of stress on your body. Think of it as a little cleanup crew working to keep your cells in check.

Melatonin might also help calm those pre-surgery jitters, acting as a natural way to ease anxiety without some of the harsher side effects of traditional meds. However, it's not a magic bullet and might not be for everyone.

Who it's for

Frequent travelers dealing with jet lag
Night owls trying to reset their sleep schedule
People looking for a natural way to ease into sleep
Those seeking a gentle way to calm pre-surgery anxiety

Probably not for you if…

People who need to be alert right after waking up
Individuals who have vivid dreams they find unsettling
Anyone looking for an immediate, strong sedative effect

Editorial summary for research context · Not medical advice

Mechanism of Action

Melatonin is an indoleamine hormone synthesized from serotonin in the pineal gland under SCN-driven circadian control. It binds MT1 and MT2 G-protein-coupled receptors distributed in the SCN, retina, cardiovascular system, and peripheral tissues, shifting circadian phase and reducing sleep latency. Melatonin is also a direct and indirect antioxidant, scavenging ROS and upregulating glutathione and SOD. In the US, oral melatonin is sold as an over-the-counter dietary supplement. Injectable melatonin is NOT available as an approved pharmaceutical in the United States and any injectable melatonin product is from research-chemical or compounding sources outside the standard supplement channel — this carries meaningful purity, sterility, and regulatory risk.

Researched Benefits

Sleep onset & circadian phase shift

Meta-analyses report modest reductions in sleep-onset latency and improvements in sleep quality, particularly for delayed sleep-phase disorder and jet lag.

[Ferracioli-Oda et al. 2013]
[Auld et al. 2017]

Antioxidant activity (preclinical)

Animal studies report protection against oxidative stress in ischemia-reperfusion, radiation exposure, and neurodegenerative models, though translation to human outcomes is uncertain.

[Reiter et al. 2016]

Perioperative anxiolysis

Randomized trials report efficacy comparable to midazolam for pre-surgical anxiety reduction, with favorable side-effect profile.

[Hansen et al. 2015]

Research Protocols

The following dosing ranges have appeared in published research protocols. Presented for informational purposes only — not a recommendation for human use.

Oral supplementation for sleep

Dosage: 0.5 mg
Frequency: once daily
Timing: 30-60 minutes before intended sleep
Cycle: 4 weeks

Lower doses (0.3-1 mg) are more physiologic and typically more effective for phase-shifting than the 5-10 mg doses common in consumer products. Tolerance and grogginess are more common at higher doses.

Injectable melatonin (research / unapproved)

Dosage: 5 mg
Frequency: once daily
Timing: subcutaneous, evening
Cycle: 4 weeks

IMPORTANT: Injectable melatonin is not FDA-approved and is not sold as a pharmaceutical in the US. Any injectable product is compounded or sourced from research-chemical channels. Sterility, dose accuracy, and purity cannot be assumed. Oral melatonin is the appropriate consumer form.

Reported Side Effects

Daytime drowsiness, grogginess (dose-dependent)
Vivid dreams or nightmares
Headache
Dizziness
Mild nausea
Transient mood changes
Potential suppression of endogenous nocturnal melatonin with high chronic dosing
Injectable form: any injection-site, sterility, and purity risks that come with non-pharmaceutical-grade compounded or research-chemical products

Contraindications

Autoimmune disease (theoretical — melatonin is immunomodulatory)
Seizure disorders (mixed evidence; caution)
Pregnancy and lactation (limited data; not recommended)
Use with sedative medications (additive CNS depression)
Use with anticoagulants (theoretical bleeding risk)
Pediatric use without pediatric sleep-specialist supervision
Operating machinery after dosing

Stacking Partners

Peptides commonly paired with Melatonin in published research and protocol write-ups.

other

Vendor Pricing

No tracked vendors carry this peptide yet. Check back as we add more affiliate partners.

Research Papers

Meta-analysis: Melatonin for the treatment of primary sleep disorders
Ferracioli-Oda E, et al. · PLoS One · 2013
PubMed 23691095 →
Melatonin for the prevention and treatment of jet lag, delayed sleep phase disorder, and shift work disorder
Auld F, et al. · Sleep Medicine Reviews · 2017
PubMed 27751669 →
Melatonin as a potent and inducible endogenous antioxidant
Reiter RJ, et al. · Journal of Pineal Research · 2016
PubMed 26888116 →

Melatonin

Mechanism of Action