ApprovedFDA approved

Oxytocin

9-aa neuropeptide, social bonding and labour

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Oxytocin vial

WHAT IS OXYTOCIN?

Detailed overview

Oxytocin (Pitocin) is a 9-aa neuropeptide clinically used for uterine stimulation and lactation support; intranasal use is studied for social behaviour and psychiatric indications.

Type

Nonapeptide

Structure

CYIQNCPLG-NH₂ (S-S)

Status

FDA approved (IV)

Route

IV, IN

Storage

2–8°C

Source

Placeholder, image later

Skin / sexual health

Melanocortin (MC1R / MC4R) receptor activation produces two main effects: skin pigmentation (melanin synthesis, UV protection, cosmetic) and centrally-mediated libido / sexual response. The peptide also supports collagen I/III and elastin synthesis, improving skin elasticity and texture, youth markers measurably rise. Acute effect (libido, energy) often within 30–60 min; lasting effects (tone, pigmentation) build over 1–3 weeks. Routine mole checks recommended.

Cognitive function

BDNF and NGF rise, supporting synaptic plasticity, LTP and the formation of new neural connections. Attention, working memory and task-switching measurably improve within 2–4 weeks. Neuroprotection: oxidative stress, excitotoxicity and glial inflammation drop, especially in aged, stressed or trauma-exposed brains. Mood stabilization and anxiety reduction follow via HPA-axis modulation. Effects are cumulative.

Data console

Lab data

/lab/molecular-data.jsonLIVE
> ClassificationNonapeptide
> StructureCYIQNCPLG-NH₂ (S-S)
> Molecular weightN/A
> Target area-
> Storage2–8°C
> Stability~30 days reconstituted

Research indications

Investigated uses and mechanisms

Libido & sexual function

Central (MC4R) pathway activation; libido and function improve.

Skin pigmentation

Increased melanin synthesis (UV-protection, cosmetic aim).

Collagen / skin elasticity

Rises in youth markers (collagen I, III).

Reconstitution

How to prepare, step by step

Important

Sterile technique required. Use bacteriostatic water (BAC) only. Never distilled or tap water.

  1. 01

    Remove the vial and bacteriostatic water (BAC) from refrigeration; let them reach room temp for 5 minutes.

  2. 02

    Wipe both vial stoppers with an alcohol swab.

  3. 03

    Draw 1 ml of BAC water into a sterile syringe (typical for the 0.01 mg vial).

  4. 04

    Inject slowly down the side of the vial, do NOT spray directly onto the peptide powder.

  5. 05

    Swirl gently in a circular motion until dissolved (~30 s), do not shake.

  6. 06

    Wait for the solution to become clear. If sediment or discoloration appears, discard it.

  7. 07

    Label the vial with reconstitution date and concentration.

  8. 08

    Store at 2–8 °C, protected from light. Inspect visually before each use.

Quality indicators

How to recognize a pure peptide

Purity markers

3

  • Clear oil

    Clear or slightly yellow (MCT/sesame/castor oil), particle-free.

  • Vial integrity

    Glass intact, rubber stopper undamaged, aluminum crimp tight.

  • Label + COA

    Manufacturer + LOT + expiry legible; independent HPLC analysis on active content.

Use caution

1

  • BA/BB carrier blend

    Excessive benzyl alcohol (>3%) raises PIP risk; verify with UGL manufacturers.

Do not use

2

  • Cloudiness / sediment

    Floating particles, cloudiness, or sediment = HARD NO.

  • Damaged glass / stopper

    Cracked vial or loose stopper, sterility compromised.

Interactions & stacks

What to combine and what to avoid

GHK-Cu

Synergistic

Copper peptide: skin regeneration and epigenetic modulation

Melanotan-2

Synergistic

Synthetic α-MSH analog: pigmentation and libido modulation

GHK-Cu

Synergistic

Complementary skin-regeneration agents.

Vitamin C / Zinc / B-complex

Synergistic

Supports collagen synthesis and antioxidant capacity.

Caffeine

Requires timing

Compatible with morning dosing; avoid late-day stacking.

Retinoids

Use caution

Skin irritation may stack, separate timing.

NSAIDs (Ibuprofen, ASA)

Use caution

Long-term concurrent use may blunt regenerative effects.

Alcohol

Avoid

Reduces recovery and increases side-effect risk.

Safety

Side effects, stop signs, contraindications

Side effects · 7

  • Nausea on first doses
  • Increased pigmentation (expected effect)
  • Reduced appetite
  • Blood-pressure increase
  • Spontaneous erection (PT-141 / Melanotan-type)
  • PIP (post-injection pain) – especially propionate, trenbolone-ace, or high-BA blends
  • Injection-site reaction: lumps, redness, warmth, tenderness

Contraindications · 5

  • Pregnancy and breastfeeding
  • Active malignancy
  • Known allergy to the peptide or its components
  • Severe hepatic or renal impairment (medical consultation required)
  • Age under 18

Related Peptides

Same therapeutic category

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MolekulaX Editorial Team·Source-verified · PubMed · FDA · EMA
Updated: June 2, 2026

The information here is strictly for educational and scientific purposes. It does not replace medical advice or clinical consultation, and it does not encourage illegal substance or pharmaceutical use. Data is sourced. When in doubt, consult your doctor.