NSTK · 01.2026Independent supplement reference
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Edition 1.0Updated August 1, 2026

Supplement × Prescription·Evidence index

Clonazepam and Melatonin: what the published research says

PubMed indexes 8 records that name Clonazepam and Melatonin together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.

Read this first

An evidence index, not guidance.

Every statement below is attributed to a named, dated, linked source.

This page lists published research relevant to Clonazepam and Melatonin. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.

The research

8 studies naming Clonazepam and Melatonin.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Comparative efficacy of prolonged-release melatonin versus clonazepam for isolated rapid eye movement sleep behavior disorder.

Sleep & breathing = Schlaf & Atmung · 2023 · PMID 35141811

Randomized Controlled Trial40 participants

“Four weeks of clonazepam, but not PR melatonin, improved RWA. RBD symptom improvement tended to be better after clonazepam than PR melatonin in exchange for increased depressive symptoms and daytime sleepiness.”

Byun et al. · Authors' conclusion

Names both Clonazepam and Melatonin in its title.

Safety and efficacy of melatonin, clonazepam, and trazodone in patients with Parkinson's disease and sleep disorders: a randomized, double-blind trial.

Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022 · PMID 35660990

Randomized Controlled Trial

“Trazodone 50 mg/day, clonazepam 1 mg/day, and melatonin 3 mg/day were all tolerable and effective in improving sleep quality in patients with PD.”

Hadi et al. · Authors' conclusion

Names both Clonazepam and Melatonin in its title.

Sleep disorders in Parkinson's disease without dementia: a comparative randomized controlled study of melatonin and clonazepam

Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova · 2012 · PMID 23388588

Comparative StudyRandomized Controlled Trial

“The number of REM sleep epochs remained lower in patients treated with clonazepam (p=0.0001). The data suggest high treatment efficacy of melatonin in the treatment of sleep disorders in Parkinson's disease without dementia.”

Litvinenko et al. · From the abstract

Names both Clonazepam and Melatonin in its title.

Polysomnographic features associated with clonazepam and melatonin treatment in isolated REM sleep behavior disorder: Time for new therapeutic approaches?

CNS neuroscience & therapeutics · 2024 · PMID 38421131

Human subjects96 participants

“These results suggest that the administration of MLT or CLO impacts (positively) on sleep parameters of iRBD patients. However, there is a need to better stratify patients, in order to treat them in a targeted manner, depending on the patient's individual sleep architecture and expected differential effects of these agents.”

Mogavero et al. · Authors' conclusion

Names both Clonazepam and Melatonin in its title.

Response to Treatment with Melatonin and Clonazepam versus Placebo in Patients with Burning Mouth Syndrome.

Journal of clinical medicine · 2022 · PMID 35566642

64 participants

“Both drugs were found to be safe, with no major adverse effects in patients with BMS. Melatonin may be regarded as an alternative treatment for patients with BMS, though further studies are needed to confirm its effectiveness.”

Castillo-Felipe et al. · From the abstract

Names both Clonazepam and Melatonin in its title.

Mechanisms underlying the antidopaminergic effect of clonazepam and melatonin in striatum.

Neuropharmacology · 1997 · PMID 9517437

Animal study

“Recent studies indicate that PK 11195 blocks BZ-induced inhibition of the adenylyl cyclase-cyclic AMP pathway in the striatum. Since cyclic AMP has been implicated in the rotational behaviour of 6-hydroxydopamine-lesioned animals, it is possible that the antidopaminergic action of clonazepam and melatonin also involves suppression of this second messenger.”

Tenn et al. · From the abstract

Names both Clonazepam and Melatonin in its title.

Central-type benzodiazepine receptors mediate the antidopaminergic effect of clonazepam and melatonin in 6-hydroxydopamine lesioned rats: involvement of a GABAergic mechanism.

The Journal of pharmacology and experimental therapeutics · 1995 · PMID 7616453

Animal study

“Bicuculline, a GABAA receptor antagonist, was also found to reduce the inhibitory effect of melatonin on the induced rotational response (P < .01). These results indicate that the antidopaminergic effect of clonazepam and melatonin is mediated predominantly by central-type benzodiazepine receptors in the central nervous system, via a GABAergic mechanism.”

Tenn et al. · From the abstract

Names both Clonazepam and Melatonin in its title.

Coexistence of central and peripheral benzodiazepine binding sites in the human pineal gland.

Life sciences · 1987 · PMID 3031403

Comparative StudyHuman subjects

“RO 5-4864, a specific ligand for peripheral benzodiazepine binding sites was the most potent of the drugs tested in displacing [3H]PK 11195, whereas clonazepam and RO 15-1788 were weak inhibitors of [3H]PK 11195 binding to pineal membranes. Overall, these results demonstrate, for the first time, the coexistence of peripheral and central benzodiazepine binding sites in the human pineal gland.”

Suranyi-Cadotte et al. · From the abstract

Names Clonazepam and Melatonin together in an interaction, co-administration, or pharmacokinetic context.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

NutriStack

Track what you actually take.

NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Clonazepam, Melatonin, and several hundred other substances.

The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.