Name: VIP
Brand: Lilipeptide
SKU: LILI-vip
Availability: OutOfStock

What is Vasoactive Intestinal Peptide (VIP)?

VIP belongs to the secretin/glucagon structural family of peptide hormones and is distributed throughout the central and peripheral nervous systems, the gastrointestinal tract and the lungs, reflecting its broad range of physiological roles.

This listing is Vasoactive Intestinal Peptide (VIP) from Lilipeptide (China), sold on Stairway to Gray with escrow: your payment is held until the order arrives and only then released to the brand.

How it is understood to work

VIP signals through the VPAC1 and VPAC2 G-protein-coupled receptors, producing smooth-muscle relaxation, vasodilation and bronchodilation, along with notable anti-inflammatory and immunoregulatory activity, and it also plays a role in circadian-rhythm regulation within the suprachiasmatic nucleus.

Research status

VIP is studied across pulmonary research, inflammatory and autoimmune models, and chronic inflammatory response conditions, as well as circadian-biology research given its role in the central pacemaker. It remains a research and investigational compound rather than an approved standalone medicine, though its normal physiological functions are well documented in the endocrinology and neuroscience literature.

This listing: Lilipeptide Vasoactive Intestinal Peptide (VIP)

Brand: Lilipeptide
Also sold by: Uther Peptide 10mg $140.00 · HK Peptide 10mg $140.00 · TFC Peptides 10mg $140.00 · HK Peptide 5mg $75.00

Lab testing

There is no public lab report for this listing yet. We can ask the brand for the batch COA before you order. Many buyers also split an independent HPLC test with others who bought the same batch.

Request the batch COA · How group testing works

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.

Specifications

Compound: Vasoactive Intestinal Peptide (VIP)
Also known as: VIP
Class: Neuropeptide (secretin/glucagon peptide family)
Form: Lyophilized (freeze-dried) powder
Molecular formula: C147H238N44O43S
Molecular weight: 3326.8 g/mol
Brand: Lilipeptide · China

Handling & storage

Supplied as a lyophilized powder; store unopened vials at -20 C protected from light, and after reconstitution with bacteriostatic water keep refrigerated and use within the timeframe set by the study protocol.

Questions

How is VIP related to secretin and glucagon structurally?

All three belong to the same peptide hormone superfamily and share sequence homology and a related receptor-binding fold, even though they act on distinct receptors and produce different physiological effects.

What receptor subtypes does VIP research typically distinguish between?

Studies generally differentiate VPAC1 and VPAC2 receptor activity, since the two subtypes have overlapping but non-identical tissue distribution and downstream effects, which matters for interpreting pulmonary versus immune-focused findings.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.