Name: Oxytocin 10mg (10 Vials / Kit)
Brand: Uther Peptide
SKU: UP-OXYTOCIN-10MG
Price: 60.00 USD
Availability: InStock

Oxytocin at a glance

Oxytocin is a cyclic nonapeptide, Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, in which a disulfide bond between the two cysteines closes a six-residue ring and a short tail ends in an amidated glycine. Magnocellular neurons of the hypothalamus make it and release it into the bloodstream from the posterior pituitary, while other neurons distribute it within the brain. Vincent du Vigneaud's synthesis of the hormone was a landmark in peptide chemistry. Formula: C43H66N12O12S2; molecular weight 1007.19 g/mol.

Price and availability

This is Uther Peptide‘s kit of 10 vials at 10mg each (100 mg in total), dispatched from China. At $60.00 for the kit, that works out to $0.60 per mg. Of the 9 Oxytocin listings on the marketplace, from 6 brands, this is the lowest price per mg. Funds stay in escrow and are released to Uther Peptide only when you mark the order as received.

This listing: Uther Peptide Oxytocin

Brand: Uther Peptide
Kit: 10 vials × 10 mg (100 mg in total)
Price per vial: $6.00
Price per mg: $0.60
Also sold by: HK Peptide 10mg $80.00 · SSRBIO 2mg $36.00 · Jinlu Peptides 2mg $108.00 · Cyprus Peptides 5mg $55.00 · HK Peptide 2mg $30.00 · Cyprus Peptides 50 IU $132.00

Lab testing

Uther Peptide published a Janoshik report for this compound. Test: Identity & purity. Result: Oxytocin 10mg. Tested Sep 15, 2025.

View the report · How to read it (Testing 101) · Every report for this compound

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

What it is studied for

Its receptor, OXTR, is a G-protein-coupled receptor that mainly signals through Gq, raising intracellular calcium. Peripherally, that drives contraction of uterine smooth muscle and of myoepithelial cells in the mammary gland. In the brain, receptors in the amygdala, nucleus accumbens and other regions are studied for roles in social recognition, pair bonding in prairie voles and stress-axis regulation. Oxytocin also binds vasopressin receptors at higher concentrations, and the structural similarity of the two hormones complicates interpretation. For spray formats, a central research question is how much peptide actually reaches the brain.

Research and regulatory status

Synthetic oxytocin is an approved medicine for inducing or strengthening labor and controlling postpartum hemorrhage, so its obstetric pharmacology is well documented. Behavioral research is a different story. Early studies of trust and social cognition attracted wide attention, but later replication efforts and larger trials, including in autism, often produced null or modest results. Methodological debates about measuring peripheral levels and central delivery continue. Outside obstetrics, it remains an investigational subject rather than an established intervention.

Checking the lab data

For a liquid spray, the report should cover more than purity. Mass spectrometry should confirm the oxytocin mass, and HPLC should quantify the peptide against a reference standard, since the label states concentration in international units. Related substances, such as deamidated or disulfide-scrambled forms, should be listed. Because the product is a solution, preservative identity, pH and microbial testing are relevant, along with a batch number and test date.

An independent lab report is attached to this listing, and the panel above shows the measured result next to the labelled amount.

Listing details

Compound: Oxytocin
Class: Nonapeptide neurohormone
Format: Nasal spray
Molecular formula: C43H66N12O12S2
Molecular weight: 1007.19 g/mol
Vial strength: 10mg
Vials per kit: 10
Total content: 100 mg
Price per mg: $0.60
Sold by: Uther Peptide
Ships from: China
Lab report: Independent report attached

Storage and preparation

Keep unopened freeze-dried vials cold, sealed and out of the light; moisture is what degrades a lyophilized cake fastest. After reconstitution, refrigerate the solution and work within the stability window your protocol sets.

Concentration arithmetic: one 10 mg vial dissolved in 2 mL gives 5 mg/mL, or 10 mg/mL in 1 mL. The Research Lab calculator in your dashboard handles any other volume.

Buyer questions

How is oxytocin related to vasopressin?

The two nonapeptides differ by only a small number of amino acids and share the same ring-and-tail architecture. Both are made in the hypothalamus, and each can activate the other's receptors to some degree. Researchers therefore use selective antagonists or receptor knockout models to attribute a finding specifically to oxytocin signaling.

Why does a spray format raise analytical questions that powders do not?

Peptides in solution degrade faster than lyophilized material, chiefly through deamidation and oxidation, and they need preservatives and a controlled pH. A spray therefore needs evidence that the stated concentration holds over time, not just at bottling. Stability data, a test date and the preservative system are worth checking alongside identity and purity.

How much Oxytocin is in this listing?

10 vials of 10mg each — 100 mg in all. Where a lab report exists, the testing panel above shows what the brand's tested sample actually measured.

When does Uther Peptide get paid?

Only after you confirm delivery. Until then the payment is held in escrow, and you can open a claim if anything is wrong with the order.

Supplied for laboratory research only. Not for human or veterinary use, and not a substitute for any prescription medicine. Nothing on this page is medical advice.