The Connection Peptide
Oxytocin is a naturally occurring neuropeptide that acts through oxytocin receptors to influence social bonding, trust, emotional recognition, and the body's response to stress. Research also examines its relationship with cortisol regulation, autonomic cardiovascular balance, and signalling involved in muscle and skin repair. Labbieux supplies Oxytocin exclusively as a nasal spray formulation for professional research.
Research shows
Practical product identifiers and format details for professional review.
Content
100 IU
Format
Nasal Spray
Oxytocin binds to widely distributed OXTR receptors in the brain, heart, uterus, gastrointestinal tract, and immune cells. In the central nervous system, it activates the limbic system (particularly the amygdala) reducing fear responses and stress reactivity while enhancing prosocial behaviours and emotional availability. Peripherally, oxytocin reduces cortisol secretion from the adrenal glands, lowers blood pressure through vasodilatory effects, promotes tissue repair by activating resident stem cells in muscle and skin, and modulates inflammatory cytokine balance. Regular protocols support emotional regulation, stress resilience, and relationship quality.
Based on published research and preclinical data. All benefits are documented under research-grade conditions.
Oxytocin acts on limbic system receptors to reduce amygdala reactivity, promote social approach behaviour, and increase feelings of trust and empathy. Clinical studies have documented measurable improvements in social bonding, emotional communication, and relationship satisfaction.
Oxytocin directly inhibits cortisol secretion from the adrenal cortex and reduces hypothalamic-pituitary-adrenal axis reactivity to stress. This makes it a powerful acute and chronic stress modulator with applications ranging from performance anxiety to trauma recovery.
Oxytocin produces vasodilation and mild blood pressure reduction via nitric oxide pathway activation. It reduces the cardiovascular stress response, improves heart rate variability, and has been documented to reduce circulating inflammatory markers associated with cardiovascular risk.
Beyond its social and hormonal roles, oxytocin receptors on muscle and skin resident stem cells mediate tissue repair. Studies have shown oxytocin promotes skeletal muscle regeneration and wound healing, adding a physical recovery dimension to its psychological effects.
The enteric nervous system is richly supplied with OXTR receptors. Oxytocin modulates gut motility, reduces visceral pain sensitivity, and has been studied for irritable bowel syndrome, where the gut-brain axis plays a central role in symptom generation.
Oxytocin release during sexual activity is central to the experience of emotional intimacy. Exogenous oxytocin administration enhances subjective feelings of closeness, emotional safety, and the depth of connection during intimate experiences: making it a core component of the intimacy protocol.
Explore selected publications and registered trials on Oxytocin, with links to the original sources.
5 publications from the research library.
Evidence type
Publication and key finding
Source
Evidence type
Review
Direct Oxytocin neurobiology review
Publication and key finding
This review maps oxytocin signalling across social recognition, emotion, reward, memory, appetite, sleep, pain, sexual behaviour and autonomic regulation.
ASN neuro
Evidence type
Review
Direct Oxytocin social-behaviour review
Publication and key finding
The review links central oxytocin pathways to prosocial behaviour, bonding, care and cooperation while highlighting the context-dependent nature of these responses.
The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry
Evidence type
Review
Direct Oxytocin sexual-behaviour evidence synthesis
Publication and key finding
A systematic review found that studies of oxytocin and human sexual behaviour used heterogeneous measures and produced context-dependent associations rather than one uniform systemic marker.
Sexual medicine
Evidence type
Preclinical study
Direct Oxytocin preclinical delivery study
Publication and key finding
In rhesus macaques, labelled intranasal oxytocin reached the orbitofrontal cortex, striatum, brainstem and thalamus, whereas labelled intravenous oxytocin was not detected in those regions.
Nature communications
Evidence type
Review
Direct Oxytocin randomized-trial review
Publication and key finding
This systematic review of randomized trials found that intranasal oxytocin can alter anxiety- and depression-related outcomes, with effects varying by diagnosis, context and study design.
Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology
5 selected studies from the wider trial library, in the order chosen for this product.
NCT00790062
NCT02487797
NCT02273115
NCT03899961
NCT01631682
Oxytocin spray may cause mild headache, occasional nausea, nasal irritation, or transient emotional sensitivity. It is not offered as an injectable formulation by Labbieux.
This public COA documents one selected production batch and is updated annually. It is not the COA for our latest available batch. Every batch has its own documentation, and partners can request the latest batch COA from our team.
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