Research vendors

Research peptide vendors

16 storefronts selling peptides as research-use-only material, read from their own sites and checked against FDA's warning letter database. Each profile records the catalogue, what the vendor publishes about lab reports, shipping and payment, and whether the shop is still trading. A listing is not an endorsement.

Research use only — not for human use

This page reports what published studies found. It is not medical advice, no provider-patient relationship is created by reading it, and nothing here is a recommendation to use any compound. Talk with a licensed clinician about your own situation. Read the full disclaimer.

What “research use only” means, and the market it sits in

Every vendor in this section sells material labelled for research, laboratory or analytical use and not for human consumption. That label is not a formality and it is not a loophole. It is the seller stating that the product has not been through the approval or compounding systems that govern medicines, and that it is not intended for a person.

The market is under active enforcement. FDA's public warning letter database shows a continuing run of unapproved-new-drug and misbranding letters to peptide sellers: Gram Peptides and Pink Pony Peptides on 31 March 2026, Wholesale Peptide on 17 June 2026, and five on a single day, 24 August 2026, to Peak Performance Peptides, Royal Peptides, NuScience Peptides, Peptide Partners and Tex Peptides. Of the vendors profiled here, one appears in that database: Swiss Chems, letter dated 10 December 2024.

Criminal exposure is real as well. In the Northern District of Indiana, the operators of Paradigm Peptides entered guilty pleas on 10 December 2025 over products sold as SARMs that in fact contained testosterone and over unapproved peptide and hCG products; both were sentenced in July 2026. Separately, payment processors have been withdrawing from this category, which is why so many storefronts route buyers to crypto, Zelle or bank wire rather than a card.

There is a lawful route for several of these compounds, and it is not this one. At its meeting on 23–24 July 2026, FDA's Pharmacy Compounding Advisory Committee voted to recommend BPC-157, KPV and TB-500 (8–6, one abstention) and MOTS-c (7–5, two abstentions) for the section 503A bulk drug substances list. That vote is advisory: FDA decides, and where compounding proceeds it runs through a licensed prescriber and a licensed pharmacy, not a research storefront.

Sources for this section

Compound profiles carry the regulatory status for each substance, and online peptide therapy covers the prescription route.

The state of this market in 2026

Three years ago a research-peptide buyer had a stable set of large storefronts to choose from. That is no longer the picture. Peptide Sciences, the largest of them, posted a three-sentence closure notice on 6 March 2026 and went dark without saying anything about open orders. Of the sixteen vendors we checked on 16 September 2026, three no longer have a working shop at all: one closed on its own announcement, one now redirects to an unrelated coupon page, and one has a parked domain. A fourth serves only a maintenance notice.

The survivors have changed shape too. Two of them now require an account before showing a single product. Three return errors or browser challenges to any automated request. Several have moved their GLP-1-class products behind codes rather than compound names. And payment has fragmented: one vendor markets ordinary card checkout as its differentiator, while another publishes a step-by-step walkthrough for paying by Zelle with a one-time identifier and a screenshot emailed to support.

None of that is decoration. It is what a market looks like when enforcement tightens and payment processors withdraw. The practical consequence for a reader is that the things worth checking — is there a lot report, who issued it, where does the material ship from, what happens to an order if the site disappears — are exactly the things that are getting harder to see. Each profile below records what we could verify and says plainly where a site blocked us.

How to read the statuses

Open: Storefront was reachable and taking orders when we last checked.
Paused: Storefront is up but not selling — a maintenance page, a hold, or no readable catalogue.
Closed: Storefront is gone: shut down, parked, or redirected somewhere that is not a shop.

Paused and closed vendors keep their page and carry no outbound link. They stay listed because the searches keep happening, and an honest answer about a vendor that has gone is more useful than a dead link.

Open

12 storefronts were reachable and taking orders on 16 September 2026, listed alphabetically. Facts are as published on each vendor's own site.

Disclosure: links marked sponsored below are affiliate links. If you sign up or buy through one we may earn a commission, at no extra cost to you. Commissions do not change what we list, how we rank it, or what the research pages say. How we make money.

Research use only — not for human use
Biotech Peptides
22 tracked compounds
Biotech Peptides is a United States research-chemical storefront that has operated since 2019 according to its own homepage. Its product sitemap listed 89 items on 2026-09-16 and covers most of the compounds tracked here. Every page carries the line that products are sold for research, laboratory or analytical purposes only and are not for human consumption.
Lab reports
Published on the site
Ships
United States
SermorelinBPC-157TesamorelinNAD+GHK-CuKLOW blend+16 more
Visit Biotech Peptides
Plain link. We are not an affiliate of Biotech Peptides at this time.
Read our review of Biotech Peptides
Research use only — not for human use
CertaPeptides
20 tracked compounds
CertaPeptides is a European supplier shipping from Romania to 31 countries, and it is not a United States seller. For a reader in the United States that is the first relevant fact; for a reader in Europe it is the reason the vendor exists, since most of the storefronts in this section ship domestically within the United States only.
Lab reports
Published on the site
Ships
European Union (31 countries, shipped from Romania)
BPC-157RetatrutideTesamorelinGHK-CuKLOW blendKPV+14 more
Visit CertaPeptides
Plain link. We are not an affiliate of CertaPeptides at this time.
Read our review of CertaPeptides
Research use only — not for human use
Core Peptides
23 tracked compounds
Core Peptides is a United States storefront selling lyophilised research peptides, described on its own pages as sold for research, laboratory or analytical purposes only and not for human consumption. Its public product sitemap listed 105 items when we read it on 2026-09-16, including most of the compounds this site tracks as well as bioregulators, topicals and growth-factor material we do not cover.
Lab reports
Published on the site
Ships
United States
SermorelinBPC-157TesamorelinNAD+GHK-CuKLOW blend+17 more
Visit Core Peptides
Plain link. We are not an affiliate of Core Peptides at this time.
Read our review of Core Peptides
Research use only — not for human use
Genoscience
14 tracked compounds
Genoscience sells research peptides from a stated headquarters in Sarasota, Florida, and its positioning is explicitly domestic: a United States facility, domestic shipping, and credit-card checkout in place of the crypto or international wire payments common elsewhere in this market. Most orders placed before the stated cutoff are said to ship within 48 hours.
Lab reports
On request
Ships
United States
BPC-157TirzepatideSemaglutideTesamorelinNAD+GLOW blend+8 more
Visit Genoscience
Plain link. We are not an affiliate of Genoscience at this time.
Read our review of Genoscience
Research use only — not for human use
Ion Peptides
13 tracked compounds
Ion Peptides trades at ionpeptide.com and serves a browser-check challenge to automated requests, so the catalogue below was read through a rendering fetch on 2026-09-16 rather than a plain one. The company's published contact address is in Sheridan, Wyoming, a registered-agent address used by a large number of unrelated businesses, so it does not tell a reader where anything is made or shipped from.
Lab reports
Not published
Ships
Not published
NAD+GLOW blendKLOW blendKPVSelankSemax+7 more
Visit Ion Peptides
Plain link. We are not an affiliate of Ion Peptides at this time.
Read our review of Ion Peptides
Research use only — not for human use
Liberty Peptides
27 tracked compounds
Liberty Peptides sells research-grade peptides and reference compounds for pre-clinical work, describing the range as domestically manufactured and third-party tested. Its product sitemap listed 71 items on 2026-09-16, one of the broader catalogues in this section, and it includes GLP-1-class material as well as the repair, cognitive and skin compounds tracked here.
Lab reports
Published on the site
Ships
United States
SermorelinBPC-157SemaglutideTesamorelinNAD+GHK-Cu+21 more
Visit Liberty Peptides
Plain link. We are not an affiliate of Liberty Peptides at this time.
Read our review of Liberty Peptides
Research use only — not for human use
Limitless Life Nootropics
18 tracked compounds
Limitless Life Nootropics trades on its own site as Limitless Biotech, and the two names refer to the same storefront. Its product sitemap listed 92 items on 2026-09-16, covering repair, cognitive, skin and longevity compounds, with sprays and capsule formats alongside the usual lyophilised vials. Notably absent from the catalogue are the GLP-1-class compounds several competitors lead with.
Lab reports
Not published
Ships
United States
SermorelinBPC-157GHK-CuGLOW blendKPVCJC-1295+12 more
Visit Limitless Life Nootropics
Plain link. We are not an affiliate of Limitless Life Nootropics at this time.
Read our review of Limitless Life Nootropics
Research use only — not for human use
Penguin Peptides
24 tracked compounds
Penguin Peptides returned 403 Forbidden to every direct automated request we made on 2026-09-16, including its sitemap, while serving its robots.txt normally. The catalogue below was read through a rendering fetch instead, so it reflects the live shop pages rather than a cached copy. Site-level blocking of this kind is common among research vendors and is not by itself a red flag.
Lab reports
Not published
Ships
Not published
SermorelinBPC-157NAD+GHK-CuGLOW blendKLOW blend+18 more
Visit Penguin Peptides
Plain link. We are not an affiliate of Penguin Peptides at this time.
Read our review of Penguin Peptides
Research use only — not for human use
Peptide Supply
17 tracked compounds
Peptide Supply is a United States storefront that describes itself as supplying high-purity peptides exclusively for research-use-only applications. Its homepage leads with a 99 percent purity claim, HPLC verification and third-party certificates for every product, and its own disclaimer states the products are not intended for use in humans or animals.
Lab reports
Published on the site
Ships
United States
BPC-157RetatrutideTirzepatideTesamorelinNAD+GHK-Cu+11 more
Visit Peptide Supply
Plain link. We are not an affiliate of Peptide Supply at this time.
Read our review of Peptide Supply
Research use only — not for human use
Polaris Peptides
27 tracked compounds
Polaris Peptides puts its whole storefront behind a sign-in. Every page we requested on 2026-09-16, including the homepage, the shop and the payment and shipping page, redirected to an account login. That is a deliberate choice some vendors have made as enforcement has tightened, and it means a prospective buyer cannot read the terms before creating an account.
Lab reports
Not published
Ships
Not published
SermorelinBPC-157RetatrutideTirzepatideSemaglutideTesamorelin+21 more
Visit Polaris Peptides
Plain link. We are not an affiliate of Polaris Peptides at this time.
Read our review of Polaris Peptides
Research use only — not for human use
Skye Peptides
0 tracked compounds
Skye Peptides is entirely account-gated. On 2026-09-16 the homepage redirected to a login form, and the site's own sitemap lists only 17 pages, all of them account, policy or information pages: about, wholesale, refunds, register, shipping and payments, test reports, knowledge bank, library, cart and checkout. There is no public product sitemap and no readable catalogue.
Lab reports
Not published
Ships
Not published
Visit Skye Peptides
Plain link. We are not an affiliate of Skye Peptides at this time.
Read our review of Skye Peptides
Research use only — not for human use
Swiss Chems
FDA letter on record
Swiss Chems is the one vendor in this section we could confirm has received an FDA warning letter. FDA issued it on 10 December 2024 under MARCS-CMS 695663, addressed to Swisschems at a New York mailing address. The letter states that FDA reviewed the website at swisschems.is in October 2024 and observed that it offered semaglutide and retatrutide products for sale in the United States, and that it also reviewed the company's Facebook and Instagram pages.
Lab reports
Published on the site
Ships
United States, International
SermorelinBPC-157TesamorelinNAD+GHK-CuKPV+15 more
Visit Swiss Chems
Plain link. We are not an affiliate of Swiss Chems at this time.
Read our review of Swiss Chems

Paused

Storefront is up but not selling — a maintenance page, a hold, or no readable catalogue. These profiles carry no outbound link.

Research use only — not for human use
Apex Peptides
0 tracked compounds
Apex Peptides is not taking orders. On 2026-09-16 the domain served a one-line maintenance notice, repeated in ten languages, alongside a WordPress administrator login link. The page carries a noindex tag, and requests for the product sitemap return the same holding page rather than a catalogue.
Lab reports
Not published
Ships
Not published
Apex Peptides is not currently taking orders (checked September 14, 2026).
The storefront serves only a maintenance notice; no catalogue was reachable when checked.
Alternatives: Core Peptides, Biotech Peptides, Liberty Peptides.
Read our review of Apex Peptides

Closed

Storefront is gone: shut down, parked, or redirected somewhere that is not a shop. These profiles carry no outbound link.

Research use only — not for human use
Amino Asylum
0 tracked compounds
Amino Asylum's storefront is gone. On 2026-09-16 a request to aminoasylum.shop ended at peptidecoupons.com, an unrelated page titled "Coming Soon" and tagged noindex. There is no catalogue behind it and no statement from the company about what happened or about open orders.
Lab reports
Not published
Ships
Not published
Amino Asylum has shut down (September 14, 2026).
The storefront domain now redirects to an unrelated coupon site; no active shop was found when checked.
Alternatives: Core Peptides, Polaris Peptides, Biotech Peptides.
Read our review of Amino Asylum
Research use only — not for human use
Peptide Sciences
0 tracked compounds
Peptide Sciences was the largest research-peptide storefront in the United States, and on 6 March 2026 it closed. The notice posted that day said the company had decided to voluntarily close all operations and discontinue the sale of all research products. It ran to three sentences. It said nothing about open orders, refunds or a reason.
Lab reports
Not published
Ships
Not published
Peptide Sciences has shut down (March 6, 2026).
Announced a voluntary closure of all operations and discontinued every research product on March 6, 2026, with no notice about open orders.
Alternatives: Core Peptides, Biotech Peptides, Liberty Peptides.
Read our review of Peptide Sciences
Research use only — not for human use
Simple Peptides
0 tracked compounds
Simple Peptides no longer has a storefront. On 2026-09-16 the domain served a two-line HTML page whose only function is a redirect to a registrar parking lander, and the site's sitemap contains that single URL and nothing else. A parked domain means the name is registered and pointed at a placeholder rather than at a shop.
Lab reports
Not published
Ships
Not published
Simple Peptides has shut down (September 16, 2026).
The domain is parked and redirects to a registrar landing page; no shop remains.
Alternatives: Core Peptides, Liberty Peptides, Biotech Peptides.
Read our review of Simple Peptides

Frequently asked questions

What does research use only actually mean?

It means the seller is stating the material has not been through the approval or compounding systems that govern medicines and is not intended for a person. Every vendor on this page prints some version of that line. It is a description of what the product is, not a disclaimer that makes a research chemical into a medicine.

Are research peptide vendors legal?

Selling a chemical to a laboratory for research is lawful. Selling an unapproved drug for human use is not, and that distinction is what FDA's warning letters to peptide sellers turn on. FDA issued letters to Gram Peptides and Pink Pony Peptides on 31 March 2026, to Wholesale Peptide on 17 June 2026, and to five sellers on 24 August 2026. The Justice Department obtained guilty pleas in a gray-market peptide case in December 2025.

Why did Peptide Sciences shut down?

On 6 March 2026 it posted a three-sentence notice saying it had decided to voluntarily close all operations and discontinue the sale of all research products. No reason was given, and nothing was said about open orders. We have found no FDA warning letter naming the company, so attributing the closure to any single cause would be a guess.

Which vendors publish certificates of analysis?

Some publish lot reports where anyone can open them, some say reports exist on request, and some publish nothing. The facts table on each profile records which, and the vendor pages say how we checked. A purity figure printed on a product page is the vendor's own claim until the report for that lot is read.

Do you publish vendor discount codes?

No. We do not issue codes, and we do not have private arrangements that produce them. Where a vendor runs a public promotion, such as a free-shipping threshold or a spend tier, the profile records it. A code presented as ours is fabricated.

What is the alternative to buying from a research vendor?

For a person rather than a laboratory, the lawful route runs through a licensed prescriber and a licensed pharmacy. Our online peptide therapy section compares telehealth programs on prescriber type, pharmacy model, labs, state coverage and published pricing, and each compound profile states what can be prescribed today.

Want it prescribed instead?

Online peptide therapy compares telehealth programs on prescriber type, pharmacy model, labs, state coverage and published pricing. The clinic directory lists in-person options by state.

How this page pays for itself

Some links above are affiliate links, disclosed over the grid. How we make money explains the arrangement, and our editorial policy explains why commissions do not change what is listed or how it is described.