VIP Peptide (Vasoactive Intestinal Peptide) for Sale
Published by Peptara Labs · Updated · How we research and check our pages
28 Amino Acid Neuropeptide, Studied in Immunity
VIP peptide (vasoactive intestinal peptide) from Peptara Labs (peptaralabs.io) is a 10mg research vial for $60 USD, at its pre-sale price: 50% off the regular $120 until October 15, 17:00 UTC, and it ships october 28, 2026. Its batch certificate of analysis is pending, so no purity figure is claimed yet. Research use only.
Pre-sale price, 50% off, ends October 15, 17:00 UTC
Pre-sale price, 50% off, ends October 15, 17:00 UTC
Flat $35 tracked shipping10mg per vial
Ships October 28
$60 USD
Was $120
The pre-sale price applies at every quantity. No code or multi-vial pricing is added to it.
Shipping, delivery and certificate status
- Shipping
- Flat $35, tracked worldwide to supported markets
- Delivery
- Ships October 28 · After dispatch: 5 to 10 business days
- Included
- Vial · Batch certificate pending · Order support on WhatsApp
Buyer facts
What do you get when you buy VIP peptide from Peptara Labs?
The order contains one sealed 10mg vial of lyophilized, or freeze-dried, vasoactive intestinal peptide. Nothing else ships with it. The price and availability rows below read the same catalog record as the order panel above. Its batch certificate is pending, so the table makes no purity claim.
| Detail | Peptara Labs VIP peptide (10mg) | Where to check it |
|---|---|---|
| Compound | Vasoactive intestinal peptide, VIP | The identity records below |
| Vial | 10mg of lyophilized powder in one sealed research vial | What ships |
| Price | $60 USD, at its pre-sale price: 50% off the regular $120 until October 15, 17:00 UTC | The order panel above |
| Availability | Pre-order. Ships October 28, 2026. Delivery follows dispatch. | The shipping note above |
| Certificate | Batch certificate pending. No purity figure is claimed yet. | Certificates of analysis |
| Status | Research use only | The label and order information |
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Before you buy
What should you check before you buy VIP peptide?
Four checks separate full-length VIP from a look-alike listing. Peptara Labs read the reference values below from two PubChem identity records on October 7, 2026.
Length
Full-length VIP has 28 amino acids. Shorter fragments, including VIP (6 to 28), are different molecules. A listing should name the full 1 to 28 chain.
Sequence
Both records give the chain as HSDAVFTDNYTRLRKQMAVKKYLNSILN, one letter per amino acid. It starts with histidine and ends with asparagine.
Formula and weight
The identity records list formula C147H237N43O43S, molecular weight 3326.8 g/mol and CAS 40077-57-4 for VIP. They show the last amino acid as a free acid. A different end form changes the formula and weight, so a certificate should name the form it measured.
Name
PubChem files human VIP under the name aviptadil, the name trials use for synthetic VIP. The two names point to the same 28 amino acid chain.
A published certificate should establish the identity of the batch. These reference facts do not confirm this vial while its certificate is pending.
Sources: PubChem, CID 16132300 Aviptadil identity record, including the VIP human synonym.; PubChem, CID 53314964 Human VIP identity record.; Youssef et al., 2022, Critical Care Medicine Aviptadil trial in COVID-19 respiratory failure. PMID 36044317.
Certificate
How will the VIP peptide batch certificate be published?
No VIP peptide certificate exists yet, and this page gives no date for one. Peptara Labs posts each released certificate in full on its certificates page. Each one names the lot, the certificate number, the HPLC purity and the month of testing. Until the VIP peptide record appears there, this page states that the batch certificate is pending and makes no purity claim.
No lot number is printed on Peptara Labs vials. The order number is what ties a vial to its batch certificate. The peptide purity guide explains what a certificate can and cannot establish.
The short answer
What is VIP peptide?
VIP is vasoactive intestinal peptide, a 28 amino acid neuropeptide. Researchers first isolated it from hog small intestine in 1970. Later work found it in the central and peripheral nervous system. Both nerve cells and immune cells release it. A 2004 immunology review used the nickname "very important peptide", after its initials.
Sources: Said and Mutt, 1970, Science Isolation of vasoactive intestinal peptide. PMID 5450698.; Delgado et al., 2004, Pharmacological Reviews VIP and immune signaling. PMID 15169929.; Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.
The science
How does VIP act in research models?
VIP acts mainly through two receptors, VPAC1 and VPAC2. Both also respond to the related peptide PACAP. A third receptor, PAC1, mainly responds to PACAP. VIP belongs to a peptide family that includes secretin, glucagon, GIP and GHRH.
Researchers describe VIP as a nerve signal, an immune regulator and a signal that widens blood vessels and prompts secretion. A 2004 review went further and called it a type 2 cytokine, the label for one group of immune-cell signals. Reviews examine its roles in the brain, including the sleep-wake clock, learning, memory and stress, and outside the brain, including gut function, immune-cell activity, inflammation and insulin release. Those roles explain the research questions, rather than establish a use for this vial.
Sources: Said and Mutt, 1970, Science Isolation of vasoactive intestinal peptide. PMID 5450698.; Delgado et al., 2004, Pharmacological Reviews VIP and immune signaling. PMID 15169929.; Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.; Harmar et al., 2012, British Journal of Pharmacology VIP and PACAP receptor review. PMID 22289055.
Research areas
What has VIP peptide been studied in?
Immune signaling
Reviews examine inflammatory signals and how VIP changes immune-cell activity.
Mouse colitis
An animal study measured gut inflammation, disease severity and cytokines, the signals immune cells release.
Lung artery pressure
An eight-patient study examined primary pulmonary hypertension and measured lung artery pressure.
COVID-19 respiratory failure
A 196-patient trial studied aviptadil, synthetic VIP. Its main end point was not met.
Sources: Delgado et al., 2004, Pharmacological Reviews VIP and immune signaling. PMID 15169929.; Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.; Abad et al., 2003, Gastroenterology VIP in a mouse colitis model. PMID 12671893.; Petkov et al., 2003, Journal of Clinical Investigation VIP in primary pulmonary hypertension research. PMID 12727925.; Youssef et al., 2022, Critical Care Medicine Aviptadil trial in COVID-19 respiratory failure. PMID 36044317.
Comparison
VIP peptide vs other immune and gut peptides
| Peptide | Structure | Research focus | Page |
|---|---|---|---|
| VIP peptide | 28 amino acids | Immune, gut and lung research | VIP peptide |
| Thymosin alpha-1 | 28 amino acids | Immune research | Thymosin alpha-1 |
| KPV | 3 amino acids | Gut inflammation models | KPV |
| LL-37 | Antimicrobial peptide | Antimicrobial research | LL-37 |
These are different molecules with different evidence. Thymosin alpha-1 matches the length of VIP, but a shared length says nothing about shared activity. The closest relatives of VIP are not on this list: PACAP, secretin, glucagon, GIP and GHRH share its peptide family, and PACAP also acts on its two main receptors. The linked pages keep each research record separate.
Sources: Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.; Harmar et al., 2012, British Journal of Pharmacology VIP and PACAP receptor review. PMID 22289055.
Evidence
What did the VIP peptide studies report?
Isolation and animal physiology
The first experiments described widening of blood vessels, lower blood pressure, increased heart output, changes in breathing and higher blood sugar in animals.
Colitis in mice
The authors reported lower disease severity and fewer inflammatory cytokines in mice with TNBS colitis, including when VIP was started after the colitis had begun. An animal finding does not establish a clinical effect.
Eight-patient lung study
The authors found low VIP levels in the blood serum and lung tissue of patients with primary pulmonary hypertension. They reported lower lung artery pressure in this small study and called for further research.
196-patient COVID-19 trial
The trial did not meet its primary end point. A secondary analysis reported better 60-day survival. That finding does not replace the failed main end point.
Synthetic VIP peptide trial ledger, October 7, 2026
The dated aviptadil search recorded 9 studies, all in COVID-19 or related lung failure. A registry entry records study status, not proof that a product works.
| Registry status on October 7, 2026 | Records |
|---|---|
| Completed | 4 |
| Active, not recruiting | 1 |
| Terminated | 2 |
| Withdrawn | 1 |
| Expanded access, no longer available | 1 |
The records were NCT04844580, NCT04311697, NCT04843761, NCT04488081, NCT04453839, NCT06729606, NCT04536350, NCT05137795 and NCT04360096.
Sources: Said and Mutt, 1970, Science Isolation of vasoactive intestinal peptide. PMID 5450698.; Abad et al., 2003, Gastroenterology VIP in a mouse colitis model. PMID 12671893.; Petkov et al., 2003, Journal of Clinical Investigation VIP in primary pulmonary hypertension research. PMID 12727925.; Youssef et al., 2022, Critical Care Medicine Aviptadil trial in COVID-19 respiratory failure. PMID 36044317.; ClinicalTrials.gov, October 7, 2026 Dated aviptadil search: 9 records.
What is not known
What is still unknown about VIP peptide?
The cited research does not establish a half-life figure. Much of the work concerns cells and animals. The lung artery study was small, and the larger respiratory failure trial did not meet its main goal. Those limits prevent broad conclusions about safety or clinical effects.
Sources: Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.; Petkov et al., 2003, Journal of Clinical Investigation VIP in primary pulmonary hypertension research. PMID 12727925.; Youssef et al., 2022, Critical Care Medicine Aviptadil trial in COVID-19 respiratory failure. PMID 36044317.
Research timeline: how the VIP peptide record developed
Research timeline
How the VIP peptide record developed
1970: isolation
Researchers isolated the peptide from hog small intestine and described its effects in animal experiments.
2003: gut and lung studies
A mouse colitis study and an eight-patient lung artery study examined different research questions.
2004 to 2013: signaling reviews
Reviews described immune-cell signals, the nervous system and the VIP receptor family.
2022: respiratory failure trial
A 196-patient trial of synthetic VIP did not meet its main end point.
Sources: Said and Mutt, 1970, Science Isolation of vasoactive intestinal peptide. PMID 5450698.; Delgado et al., 2004, Pharmacological Reviews VIP and immune signaling. PMID 15169929.; Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.; Harmar et al., 2012, British Journal of Pharmacology VIP and PACAP receptor review. PMID 22289055.; Abad et al., 2003, Gastroenterology VIP in a mouse colitis model. PMID 12671893.; Petkov et al., 2003, Journal of Clinical Investigation VIP in primary pulmonary hypertension research. PMID 12727925.; Youssef et al., 2022, Critical Care Medicine Aviptadil trial in COVID-19 respiratory failure. PMID 36044317.
Your Kit
What's Included
$60 USD Was $120 USD
Flat $35 tracked shipping · Ships October 28 · Batch certificate pending · Order support on WhatsApp
Pre-sale price, 50% off, ends October 15, 17:00 UTC
VIP (Vasoactive Intestinal Peptide) 10mg Vial
10mg per vial
Batch certificate
Batch certificate pending
Delivery
Ships October 28 · After dispatch: 5 to 10 business days
Order support
Contact our team about your order or batch certificate.
Your order includes the vial. Batch certificate pending. Delivery details are confirmed with your order. Order support is available on WhatsApp.
What ships with VIP peptide?
Your order includes the vial. Batch certificate pending. Delivery details are confirmed with your order. Order support is available on WhatsApp.
Your Research Order
VIP (Vasoactive Intestinal Peptide) research vial, batch certificate status, delivery and order support.
Batch certificate
Batch certificate pending
Delivery
Ships October 28 · After dispatch: 5 to 10 business days
Order support
Contact our team about your order or batch certificate.
Research and citations
VIP peptide sources
- Said and Mutt, 1970, Science. Isolation of vasoactive intestinal peptide. PMID 5450698. doi.org/10.1126/science.169.3951.1217
- Delgado et al., 2004, Pharmacological Reviews. VIP and immune signaling. PMID 15169929. doi.org/10.1124/pr.56.2.7
- Delgado and Ganea, 2013, Amino Acids. VIP as a neuropeptide and immune signal. PMID 22139413. doi.org/10.1007/s00726-011-1184-8
- Harmar et al., 2012, British Journal of Pharmacology. VIP and PACAP receptor review. PMID 22289055. doi.org/10.1111/j.1476-5381.2012.01871.x
- Abad et al., 2003, Gastroenterology. VIP in a mouse colitis model. PMID 12671893. doi.org/10.1053/gast.2003.50141
- Petkov et al., 2003, Journal of Clinical Investigation. VIP in primary pulmonary hypertension research. PMID 12727925. doi.org/10.1172/JCI17500
- Youssef et al., 2022, Critical Care Medicine. Aviptadil trial in COVID-19 respiratory failure. PMID 36044317. doi.org/10.1097/CCM.0000000000005660
- PubChem, CID 16132300. Aviptadil identity record, including the VIP human synonym. pubchem.ncbi.nlm.nih.gov/compound/16132300
- PubChem, CID 53314964. Human VIP identity record. pubchem.ncbi.nlm.nih.gov/compound/53314964
- ClinicalTrials.gov, October 7, 2026. Dated aviptadil search: 9 records. clinicaltrials.gov/search?term=aviptadil
Explore more
Related guides, comparisons, and compounds studied for related endpoints
Thymosin alpha-1
A different 28 amino acid peptide studied in immune research.
KPV peptide
A three amino acid peptide studied in gut inflammation models.
LL-37 peptide
An antimicrobial peptide with a separate research record.
Immune peptide research
Compare the evidence behind immune research peptides.
Gut peptide research
Read the evidence behind gut research peptides.
Selank
A separate neuropeptide research page.
Semax
Another neuropeptide with its own evidence record.
Peptide glossary
Plain definitions for the terms on this page.
How to verify peptide purity
What a published certificate can and cannot establish.
Certificates of analysis
Where batch certificates appear after release.
Where to buy research peptides
Check sourcing and certificate facts before ordering.
Buying VIP peptide: FAQ
How much is VIP peptide at Peptara Labs?
A 10mg vial is $60 USD, at its pre-sale price: 50% off the regular $120 until October 15, 17:00 UTC. Ships October 28, 2026, for research use only.
Where can I buy vasoactive intestinal peptide?
Peptara Labs lists it on this page as a 10mg research vial. Its batch certificate is pending, so no purity figure is claimed yet.
VIP peptide research FAQ
What is VIP peptide?
VIP is vasoactive intestinal peptide, a 28 amino acid neuropeptide first isolated from hog intestine in 1970. Nerve and immune cells release it.
How does VIP act in research models?
Research describes VIP as a nerve signal and an immune regulator. It also widens blood vessels. VIP acts mainly through the VPAC1 and VPAC2 receptors.
What has VIP peptide been studied in?
Mouse colitis models, a small study of lung artery pressure, and a 196-patient COVID-19 trial whose main goal was not met.
Is aviptadil the same as VIP peptide?
Aviptadil is the name trials use for synthetic VIP. PubChem files human VIP under its aviptadil record, with the same 28 amino acid sequence, formula and weight.
Sources: Said and Mutt, 1970, Science Isolation of vasoactive intestinal peptide. PMID 5450698.; Delgado and Ganea, 2013, Amino Acids VIP as a neuropeptide and immune signal. PMID 22139413.; Harmar et al., 2012, British Journal of Pharmacology VIP and PACAP receptor review. PMID 22289055.; Abad et al., 2003, Gastroenterology VIP in a mouse colitis model. PMID 12671893.; Petkov et al., 2003, Journal of Clinical Investigation VIP in primary pulmonary hypertension research. PMID 12727925.; Youssef et al., 2022, Critical Care Medicine Aviptadil trial in COVID-19 respiratory failure. PMID 36044317.; PubChem, CID 16132300 Aviptadil identity record, including the VIP human synonym.; PubChem, CID 53314964 Human VIP identity record.
Order VIP (Vasoactive Intestinal Peptide), 10mg vial
Order VIP (Vasoactive Intestinal Peptide). Ships October 28 · After dispatch: 5 to 10 business days. Order support on WhatsApp.
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