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Windy City Peptides reviews

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Windy City Peptides at a glance

PepFinder Score
8.1/10
Based in
United States
Products tracked
26 across 24 peptides
Price level
38% below the US market median
Verified store
✓ Verified owner
Online for
About 1 year
Last checked
6 Nov 2026

PepFinder currently tracks 26 products from Windy City Peptides across 24 peptides. Its listed prices per mg are 38% below the US market median, across 24 listings we could compare. The cheapest listing we track is US$18.95. PepFinder last read its listings on 6 Nov 2026.

8.1/ 10

PepFinder rating

Out of 10

Customer rating

No customer reviews yet

Best for: Low prices and large product selection

  • Large range with 26 listed products
  • Verified owner: the store proved to PepFinder that it controls its website
  • Accepts card payments, which carry chargeback protection

How its prices compare · 24 listings checked against the market

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Windy City Peptides review: what we found

Last checked 6 Nov 2026 · All sources

What PepFinder checked

Observed by our checks or taken from public records

  • We read 26 listings across 24 peptides from its website.Details · 6 Nov 2026
  • Its comparable prices are 38% below the market median per mg (24 listings compared in the same currency).Details · 6 Nov 2026
  • Verified owner: the store's owner claimed this profile and proved to PepFinder that they control windycitypeptides.com.Details · 25 Oct 2026

What the store says

The store's own statements, not checked by PepFinder

Not yet known

Gaps in the record, not faults

  • Not yet found on its website: certificates of analysis, independent testing, domain age, testing laboratory.Details
  • What ordering is like: no PepFinder customer has reviewed it or reported an order yet.

PepFinder has not bought from or tested this store's products. Request a correction with evidence.

No customer reviews of Windy City Peptides yet

Ordered from Windy City Peptides? A review or a short report of dispatch, delivery, payment or support helps the next buyer. Reviews are moderated; the store can reply but not remove them.

Rating by category

How we rate
Product selection
8.6 / 10
Value
8.3 / 10
Reliability
7.5 / 10
Delivery
8.5 / 10
Customer service
7.0 / 10
Payment options
8.5 / 10
Review sentiment
Not enough data
Testing and traceability
Not enough data
Information availability
Limited
Why does PepFinder say this?

We can show a source for 10 of the 15 facts that matter about a store (who runs it, contact details, shipping, payments, testing, prices). Not yet confirmed: domain age, certificates of analysis, independent testing, testing laboratory, public batch numbers. “Not confirmed” means we have not found it, not that the answer is no. See sources.

Popular products

Checked 6 Nov 2026
ProductSupplier price
GHK-Cu
GHK-Cu 100MG
GHK-Cu ↗
US$29.95
US$0.30/mg
57% below average
BPC-157
BPC-157 10MG
BPC-157 ↗
US$39.95
US$4.00/mg
32% below average
WCP-TESA
Tesamorelin 10 MG
WCP-TESA ↗
US$49.95
US$5.00/mg
37% below average
Selank
Selank 10MG
Selank ↗
US$29.95
US$3.00/mg
33% below average
Semax 10 mg
Semax 10 mg
Semax 10 mg ↗
US$29.95
US$3.00/mg
25% below average
Epitalon
Epitalon 10MG
Epitalon ↗
US$29.95
US$3.00/mg
average
Visit windycitypeptides.com

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Prices as listed by the supplier when we last checked; the supplier confirms the final price. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency and serving this store's region, never converted.

How its prices compare

Windy City Peptides lists in USD. We compared 24 of its 26 listings with the median price per mg across the other stores that list the same peptide in USD and serve the US (71 to 186 stores per product). Prices are never converted between currencies, so this is a like-for-like comparison for a buyer in the US.

Taken together, its typical listing sits 38% below that market median. Behind that: 23 products priced below most stores, 1 within 5% of the median, and 0 products priced above most stores.

Priced below most stores (23)

ProductPricevs market median
NAD+ 1000MGUS$39.9569% below
ARA-290 30MGUS$49.9569% below
MOTS-c 40MGUS$59.9564% below
GHK-Cu 100MGUS$29.9557% below
LL-37 10 mgUS$49.9557% below
NAD+ 500MGUS$29.9554% below

And 17 more in the full catalogue below.

Price per mg lets vials of different sizes be compared. A higher price can reflect a smaller vial, included shipping, or testing the store pays for; the per-peptide price pages show every store side by side. Prices are as the store listed them when we last checked.

Pros and things to consider

Pros

  • Large range with 26 listed products
  • Verified owner: the store proved to PepFinder that it controls its website
  • Accepts card payments, which carry chargeback protection
  • Refund or returns policy published

Things to consider

  • Nothing flagged

From PepFinder's own checks of the supplier's website and public records. “Not confirmed” means we have not found it yet. Request a correction.

About Windy City Peptides

Who they are and what they sell

Windy City Peptides is based in the United States. It lists 26 products across 24 peptides. It states it ships to the United States. It accepts Card, Visa, Mastercard, Cryptocurrency and Zelle. Its PepFinder Score is 8.1 out of 10. It has no customer reviews on PepFinder yet. PepFinder last read its website on 6 Nov 2026.

Windy City Peptides is a research-peptide store based in United States. We track 26 of its listings across 24 peptides, including Kisspeptin-10, NAD+, ARA-290, BPC-157, CJC-1295 and Epitalon. It has no customer reviews on PepFinder yet.

To see whether Windy City Peptides is good value, compare its prices per mg with other stores on Kisspeptin-10 prices in the US, NAD+ prices in the US and ARA-290 prices in the US. The “Is Windy City Peptides legit?” checks below cover contact details, payment, delivery and testing. Before a first order, read how to read a peptide COA and compare other suppliers in the US.

In their own words: Windy City Peptides supplies research-use-only peptides from Illinois for laboratory research. We ship to the United States only, with typical delivery in 2–4 business days. Orders can be paid by card (Visa/Mastercard), cryptocurrency, or Zelle. We publish our refund policy, terms of sale, and privacy policy on windycitypeptides.com. Reach us at info@windycitypeptides.com or (630) 749-7455. All products are for laboratory research use only — not for human or animal use, and not sold as drugs, supplements, or food.

From Windy City Peptides

Provided by the store. Not checked by PepFinder.

  • Based in the Chicago area, Illinois, US
  • Research use only

Store and verification

Verified supplier · 8 legitimacy checks

Store information

Trading name
Windy City Peptides
Location
Illinois, United States
Established
2025
First tracked by us
19 Oct 2026
Estimated time active
1.9 years
Website
windycitypeptides.com We may earn a commission
Email
info@windycitypeptides.com
Phone
+16307497455
Website control checkedClaimed by store

Is Windy City Peptides legit? What we can check

No website can promise that a supplier is trustworthy. These are the checks we can make from public records, the supplier’s own website and our reviews. They are the same checks as in our guide to spotting an unreliable supplier.

  • Website history (Not known)

    Domain age not yet recorded.

  • Ways to get in touch (In place)

    Email, Phone.

  • Written policies (In place)

    Refund policy and terms published.

  • Independent testing (Not known)

    We have not yet checked whether Windy City Peptides publishes testing documents.

  • PepFinder verification (Not known)

    Not verified. Most suppliers are not; verification is voluntary.

  • Regulator notices and warnings (In place)

    None found in our records.

  • Card payments (In place)

    Card payment shown on the website, which usually allows a chargeback if an order goes wrong.

  • Customer reviews (Not known)

    No reviews on PepFinder yet.

Shipping and payments

Delivery: 2–4 business days · 5 payment methods

Shipping, payment and policies

Ships to
United States
Delivery estimate (stated)
2–4 business days
Shipping policy clear
Not yet assessed
Payment methods
CardVisaMastercardCryptocurrencyZelle
Card payments
✓ Yes
Refund policy
Published
Refund policy clear
Not yet assessed
Terms of sale
Published
Privacy policy
Published

How Windy City Peptides works with customers

Replies and complaints

  • No reviews to reply to yet since claiming this profile.
  • No complaints raised through PepFinder in the last year.

Only a customer can confirm a complaint is resolved. Complaint details are private.

Store details last updated 27 Oct 2026.

Testing and certificates of analysis

We have not yet checked whether Windy City Peptides publishes testing documents.

Testing transparency

Certificates of analysis
Testing not yet checked

We have not yet checked whether Windy City Peptides publishes testing documents.

Batch-specific COAs
Not yet assessed
States third-party testing
Not yet assessed
Laboratories named by the supplier
None found
Lab accreditation identifiable
Not yet assessed
Batch numbers public
Not yet assessed
Manufacturing/source location disclosed
Not yet assessed
Testing documents we hold
None yet

We record what testing documents state and where they came from. We do not test products, and a certificate is not evidence that a product is safe for any use.

Full catalogue (52 products)

Every listing we track, with search, price per mg and price history

Listed catalogue and prices

52 products · last checked 6 Nov 2026
Product (as listed)PricePer mg
ARA-290 (Cibinetide)
ARA-290
ARA-290 (Cibinetide) (opens windycitypeptides.com)
US$49.95
30MG
US$1.67
ARA-290
ARA-290 (opens windycitypeptides.com)
US$49.95
30mg
Store's price · 25 Oct 2026
US$1.67
BPC-157
BPC-157 (opens windycitypeptides.com)
US$39.95
10mg
Store's price · 25 Oct 2026
US$4.00
BPC-157
BPC-157
BPC-157 (opens windycitypeptides.com)
US$39.95
10MG
US$4.00
CJC-1295
CJC-1295 (no DAC) (opens windycitypeptides.com)
US$44.95
5mg
Store's price · 25 Oct 2026
US$8.99
CJC-1295
CJC-1295
CJC-1295 (opens windycitypeptides.com)
US$44.95
10MG
US$4.50
Cagrilintide
Cagrilintide (opens windycitypeptides.com)
US$39.95
5mg
Store's price · 25 Oct 2026
US$7.99
Epitalon
Epitalon
Epitalon (opens windycitypeptides.com)
US$29.95
10MG
US$3.00

26 of these prices and stock levels were provided by the supplier and have not yet been checked on their website by PepFinder, so they are not used in price comparisons or scores. Last updated 25 Oct 2026.

The supplier confirms the final price and availability when you order. Product names, photos, quantities and prices are as publicly listed by the supplier; photos load from the supplier’s own website. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency; prices are never converted between currencies. We do not sell these products and give no guidance on their use.

Sources and evidence

Where each fact came from · information availability: limited

Evidence Coverage: 53%

What we know about this supplier, and whether we can show you where it came from. “Not known” means we have not found it, not that the answer is no.

FactStatusLast observed
Business locationKnown, sourced19 days ago
Contact detailsKnown, sourced19 days ago
Shipping destinationsKnown, no source shown—
Stated delivery timeKnown, no source shown—
Payment methodsKnown, sourced19 days ago
Customer support channelsKnown, sourced19 days ago
Refund or returns policyKnown, sourced19 days ago
Terms of saleKnown, sourced19 days ago
Domain ageNot known—
Certificates of analysisNot known—
Independent testingNot known—
Testing laboratoryNot known—
Public batch numbersNot known—
Product catalogueKnown, sourced2 days ago
PricesKnown, sourced50 of 52 listed prices can be compared per mg2 days ago

Evidence and sources

TopicClaimBasisSource typeCapturedLast checkedSource
Pricing26 peptide listings read from the supplier's own catalogue. Prices and stock are as the site listed them at capture.Supplier-statedSupplier website29 Oct 20262 days agoSupplier's public product catalogue
Contact detailsThe website publishes an email address and a phone number.Supplier-statedSupplier website19 Oct 202619 days agoPublishes contact details
Refund policyThe website links to its refund policy page.Supplier-statedSupplier website19 Oct 202619 days agoLinked policy page
TermsThe website links to its terms page.Supplier-statedSupplier website19 Oct 202619 days agoLinked policy page
OtherThe website links to its privacy page.Supplier-statedSupplier website19 Oct 202619 days agoLinked policy page

Verified fact: checked by us against an independent source. Supplier-stated: what the supplier says, not independently confirmed. User report: submitted by a user. Editorial assessment: our judgement. Spotted an error? Request a correction.

Supplier history

  1. 29 Oct 2026CatalogueNew listing: ARA-290 (Cibinetide) (30MG)
  2. 29 Oct 2026CatalogueNew listing: KPV (Lys-Pro-Val) (10MG)
  3. 29 Oct 2026CatalogueNew listing: Epitalon (10MG)
  4. 29 Oct 2026CatalogueNew listing: Ipamorelin (10MG)
  5. 29 Oct 2026CatalogueNew listing: Melanotan II (10MG)
  6. 29 Oct 2026CatalogueNew listing: BPC-157 + TB-500 Blend (5 mg + 5 mg) (5 mg)
  7. 29 Oct 2026CatalogueNew listing: GLOW Blend (GHK-Cu + BPC-157 + TB-500) 70 mg (70 mg)
  8. 29 Oct 2026CatalogueNew listing: KLOW Blend (GHK-Cu + BPC-157 + TB-500 + KPV) 80 mg (80 mg)
  9. 29 Oct 2026CatalogueNew listing: LIPO-C Research Blend (Methionine + Choline + L-Carnitine + Dexpanthenol) 10 mL (10 mL)
  10. 29 Oct 2026CatalogueNew listing: PT-141 (Bremelanotide) 10 mg (10 mg)
  11. 29 Oct 2026CatalogueNew listing: Semax 10 mg (10 mg)
  12. 29 Oct 2026CatalogueNew listing: LL-37 10 mg (10 mg)
  13. 29 Oct 2026CatalogueNew listing: Thymosin Alpha-1 (TA-1) 10 mg (10 mg)
  14. 29 Oct 2026CatalogueNew listing: VIP (Vasoactive Intestinal Peptide) 10 mg (10 mg)
  15. 29 Oct 2026CatalogueNew listing: WCP-TESA (10 MG)
  16. 29 Oct 2026CatalogueNew listing: Sermorelin (10 MG)
  17. 29 Oct 2026CatalogueNew listing: CJC-1295 (10MG)
  18. 29 Oct 2026CatalogueNew listing: MOTS-c (40MG)
  19. 29 Oct 2026CatalogueNew listing: NAD+ (500MG)
  20. 29 Oct 2026CatalogueNew listing: NAD+ (1000MG)
  21. 29 Oct 2026CatalogueNew listing: Selank (10MG)
  22. 29 Oct 2026CatalogueNew listing: Kisspeptin (5MG)
  23. 29 Oct 2026CatalogueNew listing: Kisspeptin (10MG)
  24. 29 Oct 2026CatalogueNew listing: GHK-Cu (100MG)
  25. 29 Oct 2026CatalogueNew listing: TB-500 (10MG)
  26. 29 Oct 2026CatalogueNew listing: BPC-157 (10MG)
  27. 26 Oct 2026ScoreTransparency Score changed from 6.7 to 7.3Integrity pass: validated data changed
  28. 25 Oct 2026VerificationProfile claimed by the supplier
  29. 19 Oct 2026ListingPublished on PepFinder
  30. 19 Oct 2026ListingSupplier added to the directoryDiscovered and read from its own website by the ingestion pipeline; approved by an editor. Pending publication review.

How PepFinder rates suppliers

What the rating and the customer rating each measure

The PepFinder rating (out of 10) is our own assessment of a supplier across reliability, product selection, pricing, delivery, customer service, website, payment options, packaging and how much information the supplier makes available. Each part is scored from what we can observe on its website, from public records and from customer reviews; parts we cannot observe are left unscored rather than marked down, and the rating is only shown once enough of them are known. It can move as more of the inputs become available.

The customer rating (out of 5 stars) is simply the average of approved customer reviews, shown from three reviews. Reviews are moderated before publication and suppliers can reply but not remove them.

The price comparison puts each listing's price per milligram against the median across every tracked supplier listing the same peptide in the same currency and serving the same region, so a UK store is measured against stores a UK buyer could order from. Prices are never converted between currencies. Suppliers cannot pay to change any of this; claiming or verifying a profile does not change the rating either.

View the full methodology

7.5/ 10

Transparency Score

Out of 10 · methodology v1 · updated 29 Oct 2026 · 32% of criteria assessed

Testing, documentation and business transparency. Separate from the PepFinder Score. Paid plans and sponsorship cannot change it. How it is calculated

Testing transparency25%n/a
Contact transparency20%10.0
Documentation15%2.4
User reviews15%n/a
Customer service10%n/a
Shipping transparency5%10.0
Longevity0%4.9
Policy transparency5%10.0
Show every factor

Testing transparency

  • ? Certificates of analysis (under review or not yet checked)not assessed
  • ? COAs are batch-specificnot assessed
  • ? States third-party (independent) testingnot assessed
  • ✕ Names the testing laboratories0/10
  • ? Laboratory accreditation is identifiablenot assessed
  • ✕ COAs reviewed by us in the last 12 months0/15

Contact transparency — 10.0

  • ✓ Contact details are public15/15
  • ? Manufacturing/source location disclosednot assessed

Documentation — 2.4

  • ◐ Sourced evidence on record20/40
  • ✕ Share of evidence independently verified0/30
  • ? Batch numbers are publicnot assessed
  • ✕ A testing document checked in the last 6 months0/15

User reviews

No approved reviews yet.

    Customer service

    Not yet assessed by the editorial team.

      Shipping transparency — 10.0

      • ? Shipping policy is clearnot assessed
      • ✓ Delivery estimate stated30/30
      • ✓ Shipping destinations listed30/30

      Longevity — 4.9

      • ✓ Earliest recorded activity 1.8 years ago

      Policy transparency — 10.0

      • ? Refund policy is clearnot assessed
      • ? Terms of sale are clearnot assessed
      • ✓ Refund or returns policy published20/20
      • ✓ Terms of sale published20/20
      • ✓ Privacy policy published20/20

      Compare Windy City Peptides with other suppliers

      SupplierRatingProducts
      PSPeptides™ logoPSPeptides™7.598Visit store
      Limitless Biotech logoLimitless Biotech5.4293Visit store
      Nationwide Peptides logoNationwide Peptides6.5134Visit store

      We may earn a commission. How this works

      Windy City Peptides vs PSPeptides™Windy City Peptides vs Limitless BiotechWindy City Peptides vs Nationwide PeptidesAll alternatives to Windy City Peptides

      Windy City Peptides: common questions

      Is Windy City Peptides legit?

      We cannot vouch for any supplier, but we can report what the record shows. Windy City Peptides meets 4 of the 8 checks we make, with nothing flagged. Each check, and its source, is listed on this page.

      Where is Windy City Peptides based?

      Our records place Windy City Peptides in United States.

      Which countries does Windy City Peptides ship to?

      Windy City Peptides states that it ships to United States. Check the supplier's own shipping policy before ordering.

      Does Windy City Peptides publish certificates of analysis?

      We have not yet checked whether Windy City Peptides publishes testing documents.

      What payment methods does Windy City Peptides accept?

      The website shows: Card, Visa, Mastercard, Cryptocurrency, Zelle.

      How long does Windy City Peptides take to deliver?

      Windy City Peptides states: "2–4 business days".

      Ready to shop at Windy City Peptides?

      • Large range with 26 listed products
      • Verified owner: the store proved to PepFinder that it controls its website
      Visit windycitypeptides.com

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      Problem with an order? Raise it privately with Windy City Peptides; either side can bring in PepFinder.

      Something wrong on this page? Request a correction with evidence.

      This page provides supplier and market information only and is not medical advice. Disclaimer

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      Windy City Peptides

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