Why do VIP prices vary so much between vendors?

Vial sizes differ, so always compare the same vial size across vendors. Batch testing, stock status, and pack discounts also move the true cost.

How does Peptide Watchdogs verify VIP vendors?

A vendor earns a Verified badge only after independent batch testing (HPLC purity plus mass-spec identity) checks out against its published COA. Verification is never for sale.

Price index / VIP

Research

VIP

Also known as vasoactive intestinal peptide

CAS 37221-79-7 Also sold as Vasoactive Intestinal Peptide

A research research peptide. Live vendor vial prices, sorted lowest first.

For research use only. Not for human consumption. No health, dosing, or usage claims are made.

What VIP is

Vasoactive intestinal peptide (VIP) is a naturally occurring 28-amino-acid neuropeptide and signaling hormone. It is not an FDA-approved finished drug product and is sold as a research chemical.

Type28 amino acids

Molecular formulaC147H237N43O43S

Molecular weight3326.8 g/mol

CAS number37221-79-7

PubChem CID53314964 ↗

Amino-acid sequenceHis-Ser-Asp-Ala-Val-Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Val-Lys-Lys-Tyr-Leu-Asn-Ser-Ile-Leu-Asn

CategoryResearch

PubChem lists two CIDs for VIP; CID 53314964 is the human/porcine 28-residue sequence and matches on-file CAS 37221-79-7.

Regulatory status: As of 2026, VIP is not FDA-approved as a stand-alone finished drug and is not listed on the FDA 503A Category 2 bulk-substances list.

Vial price (low)

$75

Vial price (high)

$75

Vial sizes

5, 10 mg

Vendors listing

Verified

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Price by vial size

sourced market ranges · Jul 2026

5 mg vial

$75–$75

10 mg vial

$75–$75

Typical vendor vial prices, Jul 2026. Exact prices load with verified listings.

Compare vendors

vendor prices · lowest first

Vendor	Vial price	Coupon
Simple Peptide	$0.05Best	—	View vendor ›
Precision Research Peptides	$0.13	WATCHDOG20	View vendor ›
Prime Lab Peptides	$0.16	—	View vendor ›
Koi Peptides	$0.18	—	View vendor ›
Protide Health	$0.20	—	View vendor ›
BioInfinity Lab	$0.22	—	View vendor ›
Kaia Peptides	$0.33	—	View vendor ›
BioLongevity Labs	$0.50	—	View vendor ›
Mile High Compounds	$1	—	View vendor ›
PSPeptides	$3.60	—	View vendor ›
Skye Peptides	$8.80	—	View vendor ›

Comparing vial prices. Vial price is what you actually pay — no derived math to get wrong. Just match the vial size across vendors: a 10 mg vial against another 10 mg vial. Sizes for this compound are listed above. Need to plan a reconstitution? Use the calculator.

Where it shows up in research

literature areas · not a health claim

VPAC/VIP-receptor pharmacologyImmune and vasodilatory signaling studiesNeuroendocrine and pulmonary cell-model research

Studied in cell and animal models of neuroendocrine and immune signaling; these are areas of laboratory study and do not indicate a proven effect in people.

Storage & handling

Store lyophilized peptide frozen and protected from light
Keep reconstituted solution cold with carrier if needed; avoid repeated freeze-thaw
Handle as a research chemical with standard lab precautions

Planning a reconstitution? Use the calculator — it is math for handling a vial, not dosing.

Looking at this for yourself? VIP is a research compound — whether it is right for a person is a medical question we cannot answer. Talk to a licensed clinician. Everything on this page is for laboratory research use only.

Sources & further reading: PubChem CID 53314964 (NCBI)
How we source this ›

Frequently asked

How much does VIP cost?

About $75–$75 per vial, depending on vial size. Compare the same size across vendors.

Why do VIP prices vary so much?

Vial sizes differ, so always compare the same vial size across vendors. Batch testing, stock, and pack discounts move the true cost too — see what "Verified" means.

How are VIP vendors verified?

A vendor earns a Verified badge only after independent batch testing (HPLC purity + mass-spec identity) checks out against its COA. Verification is never for sale.