Cognitive
Oxytocin
Hormonal
9
Amino acids
Molecular weight
Peptide
Type
Oxytocin is a cyclic nonapeptide hormone produced in the hypothalamic paraventricular and supraoptic nuclei that functions as both a peripheral hormone and central neuromodulator. It binds to oxytocin receptors (OXTRs), Gq-protein-coupled receptors that elevate intracellular calcium to drive uterine contractions, social bonding behavior, and stress attenuation. Emerging preclinical evidence shows oxytocin activates AMPK and inhibits mTOR to promote cellular autophagy, supporting its investigation as a longevity-oriented agent beyond its FDA-approved obstetric indications.
Top researched benefits
Overview of Oxytocin
Oxytocin binds the oxytocin receptor (OXTR), a Class 1 G-protein-coupled receptor that activates Gq signaling to elevate intracellular calcium via IP3-mediated store release and voltage-operated calcium entry. Centrally, it modulates the amygdala, HPA axis, and dopaminergic/serotonergic pathways to produce anxiolytic, pro-social, and anti-inflammatory effects.
obstetric fda approved
- Initiates or augments uterine contractions when vaginal delivery medically indicated.
- Controls postpartum bleeding through uterine contraction stimulation during third stage.
- Adjunctive therapy for incomplete or inevitable abortion in second trimester.
researchemerging
- Extensive research with mixed results on social functioning; optimal dosing unclear.
- Combined with exposure therapy; shows reduced PTSD/depression symptoms.
- Decreases amygdala reactivity to social threats; normalizes brain connectivity.
- Improves libido, arousal, orgasm intensity in both sexes.
Typical Dose
24 IU per intranasal administration (IV half-life ~1–6 min vs intranasal ~2 hours)
Frequency
once daily
Cycle Duration
8 weeks on, reassess; continuous use common under clinical guidance
Storage
Lyophilized powder: store at -20°C, desiccated and protected from light. Reconstituted: refrigerate at 2–8°C for up to 28–30 days.
Chemical Makeup
Key benefits
Reduces cortisol and dampens HPA axis hyperactivity, producing measurable anxiolytic and stress-buffering effects in both human and animal models
Promotes uterine contractions and facilitates labor and postpartum uterine tone — the basis for its FDA-approved clinical use
Activates AMPK and inhibits mTOR to promote autophagy in preclinical aging models, potentially reducing senescent cell accumulation and oxidative stress associated with aging
Modulates amygdala activity to enhance social salience processing, trust, and prosocial bonding behavior in preclinical and early clinical research
Community interest
This peptide is still gaining traction in the community.
Neuropeptide Hormone | Social Bonding & Longevity
This overview is informational and based on aggregated descriptions from studies and user reports.
Was it helpful?YesNoOxytocin Molecular Information
View the scientifc details of Oxytocin.
9
Amino Acids
Oxytocin
Cys
Cys
Position 1
Tyr
Tyr
Position 2
Ile
Ile
Position 3
Gln
Gln
Position 4
Asn
Asn
Position 5
Cys
Cys
Position 6
Pro
Pro
Position 7
Leu
Leu
Position 8
Gly
Gly
Position 9
Molecular Weight
1007.19DaChain Length
9Amino AcidsType
PeptideOxytocin Protocols
Intranasal delivery is the most studied and widely used route for Oxytocin in human research, providing direct transmucosal absorption and CNS access with approximately 11% bioavailability and an onset within minutes. Standard dosing uses 4 IU (~6.7 mcg) per spray actuation; all doses below are expressed in mcg using the conversion 1 IU = 1.68 mcg. Administer 30–45 minutes before the desired effect for optimal timing.
| Goal | Dosage | Frequency | Route |
|---|---|---|---|
| Enhance prosocial behavior and reduce social anxiety in research or therapeutic contexts — the most common single-dose research paradigm | 40 | 1 day range | Intranasal |
| Reduce situational anxiety and HPA-axis stress reactivity with twice-daily chronic intranasal dosing | 34 | 2 day range | Intranasal |
| Improve social reciprocity and reduce repetitive behaviors in children aged 3–12 over a 12-week study course | 27 | 2 day range | Intranasal |
| Improve social cognition and emotion recognition in adult autism spectrum populations over 4–12 weeks | 40 | 2 day range | Intranasal |
| Enhance arousal, bonding, and orgasmic response when dosed 30–50 minutes before sexual activity | 54 | 1 day range | Intranasal (as needed, 30–50 min before activity) |
| Sustain elevated CNS Oxytocin tone across mood, social function, and stress domains during extended treatment cycles | 54 | 2 day range | Intranasal |
Reconstitution Instructions
Materials needed:
Steps to reconstitute
- If preparing from lyophilized powder: dissolve Oxytocin in sterile saline or BAC water to achieve a concentration of ~6.7 mcg (4 IU) per 0.1 mL spray actuation
- Transfer the solution into a metered-dose nasal spray bottle calibrated to deliver 0.1 mL per actuation
- If using a pre-compounded nasal spray, prime the pump by pressing 3–5 times until a fine mist appears before first use
- Gently blow your nose to clear nasal passages; if congested, use a saline rinse 10–15 minutes beforehand
- Tilt your head slightly forward — do not tilt back, as this sends the spray into the throat and reduces olfactory absorption
- Insert the nozzle into one nostril, angled slightly toward the outer nasal wall
- Spray once while breathing in gently and slowly through the nose — do not sniff hard
- Hold your breath for 5–10 seconds after each spray, then breathe normally
- Repeat in the other nostril as per protocol; alternate nostrils for multi-spray doses
- Store the prepared nasal spray refrigerated at 2–8°C; use within 4 weeks of preparation
Oxytocin Cycle
The Oxytocin Cycle section explains how long a typical cycle lasts and what to expect during each phase. Over time, your body can become less responsive with continuous use.
Taking breaks between cycles may help maintain effectiveness and support better overall results.
- Week 0-0
- IV: 1-3 minute onset, 30-60 minute duration; IM: 3-5 minute onset
- Week 0-0
- 15-30 minute onset, peak 30-60 minutes, 2-4 hour duration
- Week 0-0
- 30-45 minute onset, peak ~60 minutes, 2-4 hour duration
Dosing tools
Oxytocin Peptide Dosage Calculator
Calculate peptide doses with our visual syringe guide.
mg
Enter the total amount of peptide in the vial in milligrams (as stated on the label).
The dose you want to inject per administration, in mcg or mg.
1,000 mcg = 1 mg
1 mL
2 mL
3 mL
5 mL
Custom
Volume of bacteriostatic water you add to reconstitute the powder. Use BAC water for preservation.
Injection Results
Based on your vial and dilution inputs.
Oxytocin
SINGLE COMPOUNDVolume per injection
0.05
mL
Concentration
10.00
mg/mL
Doses per vial
20
doses
Total injections per vial
20 injections
How it works
Based on a 10 mg Oxytocin vial diluted with 1 mL of bacteriostatic water, each 500 mcg injection equals 0.05 mL.
1mL / 100 units
5 units
0.050 mL
Reference Guide
Dosing Cycle
- Peptide
- Oxytocin
- Dosing
- 24 IU per intranasal administration (IV half-life ~1–6 min vs intranasal ~2 hours)
- Dosing Frequency
- once daily
- Cycle Duration
- 8 weeks on, reassess; continuous use common under clinical guidance
- Storage
- Lyophilized powder: store at -20°C, desiccated and protected from light. Reconstituted: refrigerate at 2–8°C for up to 28–30 days.
Note: Triple agonist; microdose for fewer side effects
Reconstitution Tips
- Use bacteriostatic water (BAC) — contains 0.9% benzyl alcohol for preservation
- Inject water slowly — aim down the vial wall, not directly onto powder
- Never shake — gently swirl or roll the vial until dissolved
- Store properly — refrigerate at 2-8°C after reconstitution
- Use within 28 days — most reconstituted peptides remain stable for about 4 weeks
- Keep sterile — always clean vial tops with alcohol before drawing
Peptide Interactions
Research suggestions of Oxytocin interactions with other common peptides and substances.
Healing
bpc
Longevity
BPC-157
COMPATIBLE
No direct interactions; different mechanisms (tissue repair vs social function).
Sexual
kis
Hormonal
Kisspeptin
SYNERGISTIC
Both involved in reproduction; kisspeptin stimulates GnRH; oxytocin enhances arousal.
Cognitive
sel
Longevity
Selank
SYNERGISTIC
Complementary anxiolytic effects—Selank modulates GABA; oxytocin acts on central receptors.
Side effects
Contraindications
Certain obstetric conditions (see prescribing info)
Pregnancy (without medical supervision)
Active sinus infection (intranasal)
Severe hyponatremia
Stop signs
Uterine hyperstimulation or fetal distress (injectable)
Severe or persistent headache
Signs of water intoxication (confusion, seizures, swelling)
Severe nasal irritation or bleeding
Allergic reaction (rash, breathing difficulty)
Bad signs
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Frequently asked questions
What is a peptide dosage calculator?
A peptide dosage calculator is a free tool that converts your vial size, bacteriostatic water volume, and target dose into an exact syringe draw volume. Instead of doing the reconstitution math by hand, you enter three inputs and instantly get the concentration of your solution and how many milliliters or syringeunits to draw. This calculator works for single peptide compounds and multi-peptide blends.
How do I calculate peptide dosage from a vial?
To calculate your peptide dose, divide the total peptide content of your vial in micrograms by the volume of bacteriostatic water you added in milliliters. This gives you your solution concentration in mcg/mL. Then divide your target dose by that concentration to get your draw volume. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water gives a concentration of 2,500 mcg/mL. A 250 mcg dose would require drawing 0.1mL. This calculator automates all of those steps instantly.
How much Bacteriostatic water should I add to a peptide vial?
Most people add 2mL to 3mL of bacteriostatic water per vial, but the right amount depends on the dose you want to draw and the syringe size you are using. Adding 1mL to a 5mg vial gives you a concentration of 5,000 mcg/mL, making each dose very small in volume. Adding 2mL gives you 2,500 mcg/mL, which is easier to measure on a standard insulin syringe. A general guideline is to choose a volume that puts your typical dose somewhere between 10 and 30 units on a U-100 syringe. Use the calculator above to test different water volumes and find what works for your dose.
How are peptides different from proteins?
Both are made of amino acids, but peptides are much smaller than proteins. Because of their tiny size, peptides can act like tiny messengers in the body, sending specific signals to your cells to tell them exactly what to do.
OxytocinResearch References
Oxytocin is a fda approved compound
Oxytocin
Oxytocin is a fda approved compound
Intranasal Oxytocin in Autism Spectrum Disorder
N=290 children/adolescents; 48 IU daily; 24 weeks. Did not significantly improve social functioning vs placebo; highlights need for better patient selection.
2021
Oxytocin Augmented Prolonged Exposure Therapy for PTSD
Veterans with PTSD; 40 IU intranasal combined with PE therapy. Lower PTSD and depression symptoms; higher therapeutic alliance vs placebo.
2019
Intranasal Oxytocin for Obesity
N=61 adults with obesity; 24 IU four times daily; 8 weeks. No weight loss but significant reduction in caloric intake; improved mental health-related quality of life.
2024
Calculate peptide dosages
Learning how to calculate a peptide dose? Use our beginner-friendly peptide dosage, blend, and accumulation calculators. Enter vial size, reconstitution volume, and target dose to get exact draw volumes instantly. No guesswork, just clear guidance that helps prevent common mistakes.
