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

Supplement × Prescription·Evidence index

Melatonin and Quetiapine: what the published research says

PubMed indexes 4 records that name Melatonin and Quetiapine 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 Melatonin and Quetiapine. 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

4 studies naming Melatonin and Quetiapine.

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

Chronic Caffeine Consumption, Alone or Combined with Agomelatine or Quetiapine, Reduces the Maximum EEG Peak, As Linked to Cortical Neurodegeneration, Ovarian Estrogen Receptor Alpha, and Melatonin Receptor 2.

Psychopharmacology · 2024 · PMID 38842700

Animal study

“CAFF treatment triggered brain and ovarian derangements partially antagonized with concurrent AGO or QUET administration but with no overt affection of estrus cycle progression. Estrogenic, adenosinergic, and melatonergic signaling and brain-ovarian crosstalk may explain these effects.”

Abdelmissih et al. · Authors' conclusion

Names both Melatonin and Quetiapine in its title.

Quetiapine reduces nocturnal urinary cortisol excretion in healthy subjects.

Psychopharmacology · 2004 · PMID 14735295

Clinical TrialComparative StudyRandomized Controlled Trial

“The significant reduction of nocturnal cortisol excretion following quetiapine reflects a decreased activity of the HPA-axis in healthy subjects. This finding may be an important aspect in quetiapine's mode of action in different patient populations.”

Cohrs et al. · Authors' conclusion

Names Melatonin and Quetiapine 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 Melatonin, Quetiapine, 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.