Best Research Peptide Vendors by Category
Ranked shortlists of the best research peptide vendors for specific needs.
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NuScience Peptides FDA Warning Letter: Status and 8 Alternatives (2026)
FDA sent NuScience Peptides a warning letter dated August 24, 2026. Its store was still open on October 29, without the products the letter named. Here's the letter, its test record and eight vendors we review, by use case.
5 min read · Updated Oct 2026
- Coupon codes
Ipamorelin Coupon Codes (2026): Verified Discounts at Rated Vendors
Four rated vendors that sell ipamorelin take a PeptideChecked code. Here are their ipamorelin prices in late October 2026, what each code takes off, and what the vendors without a code charge.
5 min read · Updated Oct 2026
- Coupon codes
MOTS-c Coupon Codes (2026): Verified Discounts at Rated Vendors
Four rated vendors that sell MOTS-c take a PeptideChecked code. Here are their MOTS-c prices on October 22, 2026, what each code takes off, and why the cheapest vial has no code at all.
5 min read · Updated Oct 2026
- Coupon codes
Semax Coupon Codes (2026): Verified Discounts at Rated Vendors
Four rated vendors that sell Semax take a PeptideChecked code. Here are their Semax prices on October 22, 2026, what each code takes off, and what the vendors without a code offer instead.
5 min read · Updated Oct 2026
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Royal Peptides FDA Warning Letter: Status and 8 Alternatives (2026)
FDA sent Royal Peptides a warning letter on August 24, 2026, and its store was still open on October 22. Here's what the letter says, what Finnrick's data shows, and eight vendors we review, by use case.
5 min read · Updated Oct 2026
- Coupon codes
NAD+ Coupon Codes (2026): Verified Discounts at Rated Vendors
Four rated vendors that sell NAD+ for research take a PeptideChecked code. Here are their NAD+ prices on October 22, 2026, the price per 100mg after each code, and the cheaper vial that needs no code.
5 min read · Updated Oct 2026
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Proven Peptides Review: Shut Down? What Happened and Alternatives (2026)
Proven Peptides (provenpeptides.com) is no longer operating. Sources disagree on when it closed (2020 or late 2024), and its site returned a server error when we checked on October 21, 2026. A separate 'Proven Peptides Labs' store is also closing. Here's what we could confirm and vendors with lot-matched COAs.
3 min read · Updated Oct 2026
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Peptide BOGO Deals (October 2026): Buy One, Get One Free at 4 Vendors, Checked
Four vendors were running buy-one-get-one-free offers on October 21, 2026. We list what's included, the real cost per mg once the free vial is counted, and which of them publish COAs.
3 min read · Updated Oct 2026
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Soma Chems Review: Shut Down? Status and Alternatives (2026)
Soma Chems (somachems.com) replaced its store with a 'no longer accepting new orders' notice between October 10 and 12, 2026. Here's what we confirmed from its site and archived pages, and five vendors that publish lot-matched COAs from named labs.
5 min read · Updated Oct 2026
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Maxim Peptide Review: Shut Down? Status and Alternatives (2026)
Maxim Peptide (maximpeptide.com) was reported out of business in June 2023, and its domain showed a for-sale page when we checked on October 21, 2026. Here's what we could confirm, how it differs from Maximum Peptides, and vendors that publish lot-matched COAs.
4 min read · Updated Oct 2026
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Kisspeptin Vendors (2026): Where to Buy Kisspeptin-10 for Research and Who Documents the Testing
Nine of the ten vendors we rate list kisspeptin, almost always the kisspeptin-10 fragment. We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
7 min read · Updated Oct 2026
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LL-37 Vendors (2026): Where to Buy LL-37 for Research and Who Documents the Testing
Six of the ten vendors we rate list LL-37, the human cathelicidin peptide, and it's one of the pricier peptides per mg. We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
6 min read · Updated Oct 2026
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Pinealon Vendors (2026): Where to Buy Pinealon for Research and Who Documents the Testing
Six of the ten vendors we rate list pinealon, the Glu-Asp-Arg tripeptide often confused with Epitalon. We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
6 min read · Updated Oct 2026
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SS-31 Vendors (2026): Where to Buy SS-31 (Elamipretide) for Research and Who Documents the Testing
Nine of the ten vendors we rate list SS-31, the research name for elamipretide, which FDA approved as Forzinity in 2025. We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
8 min read · Updated Oct 2026
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DSIP Vendors (2026): Where to Buy DSIP for Research and Who Documents the Testing
Eight of the ten vendors we rate list DSIP, which FDA documents call emideltide. We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
7 min read · Updated Oct 2026
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VIP Peptide Vendors (2026): Where to Buy Vasoactive Intestinal Peptide for Research and Who Documents the Testing
Five of the ten vendors we rate list VIP, vasoactive intestinal peptide, not a 'VIP' membership tier. We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
6 min read · Updated Oct 2026
- Coupon codes
BPC-157 Coupon Codes (2026): Verified Discounts at Rated Vendors
Four rated vendors that sell BPC-157 take a PeptideChecked code. Here are their BPC-157 prices on October 16, 2026, what each code would take off, and what the other vendors offer instead.
5 min read · Updated Oct 2026
- Coupon codes
GHK-Cu Coupon Codes (2026): Verified Discounts at Rated Vendors
Four rated vendors that sell GHK-Cu take a PeptideChecked code. Here are their GHK-Cu prices on October 16, 2026, what each code takes off, and what the vendors without a code offer.
5 min read · Updated Oct 2026
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Sermorelin Vendors (2026): Where to Buy Sermorelin for Research and Who Documents the Testing
Nine of the vendors we review list sermorelin, the GHRH analog once sold as the drug Geref. We compared vial sizes, price per mg and whether each posts a sermorelin certificate with a named lab and lot.
6 min read · Updated Oct 2026
- Coupon codes
TB-500 Coupon Codes (2026): Verified Discounts at Rated Vendors
Three rated vendors that sell a standalone TB-500 vial take a PeptideChecked code. Here are their prices on October 16, 2026, what each code takes off, and what the vendors without a code offer.
5 min read · Updated Oct 2026
- Coupon codes
Blank Peptides Coupon Code (2026): CHECKED for 10% Off
Our code CHECKED gives 10% off the entire order at Blank Peptides. Here's how to apply it, how it compares with the site's own offers, and how Blank scores on transparency.
3 min read · Updated Oct 2026
- Best of
NAD+ Vendors (2026): Where to Buy NAD+ for Research, Prices & COAs
NAD+ is a coenzyme, not a peptide, but most peptide vendors stock it. We compared vial sizes, price per 100mg, partner codes and NAD+ certificates across seven vendors.
6 min read · Updated Oct 2026
- Best of
Retatrutide Vendors (2026): Where to Buy Retatrutide for Research, Prices & COAs
Retatrutide is Eli Lilly's investigational triple agonist, not an approved drug. Seven of the vendors we rate list it, mostly under code names. We compared price per mg, code-adjusted prices and who posts a named-lab, lot-matched certificate.
8 min read · Updated Oct 2026
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Semaglutide Vendors (2026): Research Semaglutide Prices, COAs & FDA Status
Five of the eight vendors we list sell research-labeled semaglutide, three of them under code names. We compared sizes, price per mg, partner-code math, certificates and FDA's position on these products.
5 min read · Updated Oct 2026
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Tirzepatide Vendors (2026): Where to Buy Tirzepatide for Research, Prices & COAs
Tirzepatide is FDA-approved only as Lilly's Mounjaro and Zepbound; research-labeled vials are a different, unapproved product. Six vendors we rate list it, mostly under code names. We compared price per mg, code math and certificates.
6 min read · Updated Oct 2026
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BPC-157 + TB-500 Blend (Wolverine Stack) Vendors (2026): Prices & COAs
Five of our listed vendors sell a premixed BPC-157 + TB-500 vial. We compared price per mg and whether each posts a certificate for the blend itself, with a named lab, lot and per-component content.
6 min read · Updated Oct 2026
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GLOW and KLOW Peptide Blends (2026): Vendors, Prices & COAs Compared
GLOW is a 70mg GHK-Cu, BPC-157 and TB-500 blend; KLOW adds 10mg of KPV for 80mg. We compared six vendors' labels, prices per mg, partner codes and blend-specific certificates.
6 min read · Updated Oct 2026
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5-Amino-1MQ Vendors (2026): Where to Buy 5-Amino-1MQ for Research, Prices & COAs
Five of our listed vendors sell 5-Amino-1MQ, a small-molecule NNMT inhibitor, not a peptide. We compared price per mg and whether each posts a certificate that names the lab and the lot.
5 min read · Updated Oct 2026
- Best of
Eternal Peptides Shut Down? Status and Alternatives (2026)
Eternal Peptides ended website ordering on September 15, 2026 and said support would run until September 30. Here's what former customers should check, and the eight vendors we review, by use case.
6 min read · Updated Oct 2026
- Coupon codes
Thymosin Alpha-1 Coupon Codes (2026): Verified Discounts at Rated Vendors
Three rated vendors that sell thymosin alpha-1 have a PeptideChecked code. Here are their TA1 prices on October 7, 2026, what each code would take off, and what the others offer instead.
4 min read · Updated Oct 2026
- Coupon codes
Epitalon Coupon Codes (2026): Verified Discounts at Rated Vendors
Three rated vendors that sell Epitalon have a PeptideChecked code. Here are their 10mg prices on October 7, 2026, what each code would take off, and what the other vendors offer instead.
3 min read · Updated Oct 2026
- Coupon codes
Licensed Peptides Coupon Code (2026): Affiliate5 for 5% Off
Our code Affiliate5 gives 5% off at Licensed Peptides. Here's how to apply it, how it compares with the site's own 2-for-1 and member sales, and how Licensed Peptides scores on transparency.
5 min read · Updated Oct 2026
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Peptide Partners FDA Warning Letter (2026): What It Says and Vendors to Compare
FDA sent Peptide Partners a warning letter dated August 24, 2026, citing health claims for GLP-1-class products and the sale of reconstitution solution. What it says, what it means for buyers, and eight vendors to compare.
3 min read · Updated Oct 2026
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Amino Asylum Shut Down: What's Confirmed, What Isn't, and Alternatives (2026)
Amino Asylum went offline in June 2025 after a reported federal raid, and its domain still shows only a placeholder. What's confirmed, what isn't, and eight vendors to compare instead.
3 min read · Updated Oct 2026
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PureRawz Status (2026): It No Longer Sells Direct. Peptide Vendors to Compare Instead
PureRawz now describes itself as an informational and affiliate website that doesn't sell or supply products. Here's what changed, what FDA's 2025 letter said, and the eight peptide vendors we review instead.
3 min read · Updated Oct 2026
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Paradigm Peptides Shut Down: The Federal Case, Look-Alike Sites and Alternatives (2026)
Paradigm Peptides' owner was sentenced to 70 months in federal prison on July 30, 2026. What prosecutors said it did, why a similarly named site isn't the same business, and eight vendors to compare.
3 min read · Updated Oct 2026
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Science.bio Closed: What the Notice Says and Peptide Alternatives (2026)
Science.bio permanently closed on January 27, 2026, and its site warns about impostors claiming to be affiliated with it. What the notice says and eight peptide vendors to compare.
3 min read · Updated Oct 2026
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CJC-1295 Vendors (2026): Where to Buy CJC-1295 for Research and Who Documents the Testing
Six of the seven vendors we compared in September sell standalone CJC-1295, and one sells it only in a blend. We compared DAC and no-DAC versions, $/mg and COA documentation.
5 min read · Updated Oct 2026
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Peptide Sciences Shut Down: Status and the Best Alternatives (2026)
Peptide Sciences shut down in March 2026 and warns that sites claiming to be affiliated with it are fraudulent. Here's what to check before switching, and the eight vendors we review, by use case.
6 min read · Updated Oct 2026
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Thymosin Alpha-1 Vendors (2026): Where to Buy Thymosin Alpha-1 for Research and Who Documents the Testing
All seven vendors we compared in September list thymosin alpha-1 (TA1). We compared vial sizes, price per mg and whether each posts a TA1 certificate that names the lab and the lot.
5 min read · Updated Oct 2026
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MOTS-c Vendors (2026): Where to Buy MOTS-c for Research and Who Documents the Testing
All seven vendors we compared in September list MOTS-c. We compared vial sizes, price per mg and whether each posts a MOTS-c certificate that names the lab and the lot.
5 min read · Updated Oct 2026
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Third-Party Tested Peptides (2026): How Our Ten Vendors Check Out
Every vendor says 'third-party tested'. We checked which of our ten name a lab, tie COAs to lots, allow lab-side verification and have independent data.
10 min read · Updated Oct 2026
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KPV Vendors (2026): Where to Buy KPV for Research and Who Documents the Testing
Six of the seven vendors we compared in September sell KPV in vials; Swiss Chems sells only capsules. We compared vial sizes, price per mg and whether each posts a KPV certificate with a named lab and lot.
5 min read · Updated Oct 2026
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Selank Vendors (2026): Where to Buy Selank for Research and Who Documents the Testing
All seven vendors we compared in September list Selank, but NextGenPeps was out of stock. We compared vial sizes, price per mg and whether each posts a Selank certificate with a named lab and lot.
5 min read · Updated Oct 2026
- Coupon codes
Peptide Coupon Codes (2026): Verified Codes for 10 Vendors
We have codes for four of the ten vendors we review: CHECKED at PSPeptides and Blank Peptides, AFFILIATE50OFF at Ascension Peptides and Affiliate5 at Licensed Peptides. Here's what each does and what the other six offer.
7 min read · Updated Oct 2026
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Fastest Shipping Peptide Vendors (2026): Cutoffs, Carriers and Free-Shipping Thresholds Compared
We compared the published shipping policies of our eight vendors: same-day cutoffs, carriers, express options, free-shipping minimums and where each will ship.
7 min read · Updated Oct 2026
- Coupon codes
PSPeptides Coupon Code (2026): CHECKED for 10% Off
Our code CHECKED gives 10% off at PSPeptides. Here's how to apply it, what we could and couldn't confirm about its terms, and how PSPeptides scores on transparency.
4 min read · Updated Oct 2026
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Janoshik-Tested Peptide Vendors (2026): Which of Our Eight Use Janoshik, and How to Check
Only two of our eight vendors say they test with Janoshik. Here's which ones, how clearly they disclose it, which labs the other six use, and how to verify a report.
5 min read · Updated Oct 2026
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GHK-Cu Vendors (2026): Where to Buy GHK-Cu for Research and Who Documents the Testing
All seven vendors we compared in September list GHK-Cu vials. We compared sizes, price per mg and whether each posts a GHK-Cu certificate that names the lab and the lot.
5 min read · Updated Oct 2026
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Ipamorelin Vendors (2026): Where to Buy Ipamorelin for Research and Who Documents the Testing
All seven vendors we compared in September list ipamorelin. We compared vial sizes, price per mg and whether each posts an ipamorelin certificate naming the lab and the lot.
5 min read · Updated Oct 2026
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Peptide Vendors That Accept Credit Cards (2026): Payment Methods at Eight Vendors
We checked which cards, wallets and other payment methods eight peptide vendors accept, and what their terms say about chargebacks.
6 min read · Updated Oct 2026
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Cheapest Peptide Vendors (2026): Price per mg for BPC-157 and TB-500 at Seven Vendors
We pulled current BPC-157 and TB-500 prices from seven vendors on September 26, 2026, worked out price per mg, and show where coupon codes change the math.
7 min read · Updated Oct 2026
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BPC-157 Vendors (2026): Where to Buy BPC-157 for Research and Who Documents the Testing
All eight vendors we compared list BPC-157. We compared vial sizes, price per mg and whether each posts a BPC-157 certificate with a named lab and lot number.
7 min read · Updated Oct 2026
- Coupon codes
Ascension Peptides Coupon Code (2026): AFFILIATE50OFF for 50% Off Your First Order
Our code AFFILIATE50OFF gives 50% off a first order at Ascension Peptides. Here's how to apply it, what Ascension says about the discount, and how the vendor scores.
5 min read · Updated Oct 2026
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Tesamorelin Vendors (2026): Where to Buy Tesamorelin for Research and Who Documents the Testing
All seven vendors we compared in September list tesamorelin, the active ingredient in the FDA-approved drug Egrifta. We compared vial sizes, price per mg and whether each posts a certificate with a named lab and lot.
6 min read · Updated Oct 2026
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Swiss Chems Alternatives (2026): Seven Vendors With No FDA Warning Letter
Swiss Chems received an FDA warning letter in December 2024 and a 48% Finnrick rating. Here are the seven other vendors we review, matched to what you need, with each one's gaps.
6 min read · Updated Oct 2026
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Semax Vendors (2026): Where to Buy Semax for Research and Who Documents the Testing
All seven vendors we compared in September list Semax. We compared vial sizes, price per mg and whether each posts a Semax certificate that names the lab and the lot.
5 min read · Updated Oct 2026
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Best Place to Buy Peptides Online: Ten Vendors for US Buyers, Rated
Ten research peptide vendors for US buyers (nine US-based, one Canadian), in our editors' order, with scores, locations, shipping and every red flag we found.
11 min read · Updated Oct 2026
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AOD-9604 Vendors (2026): Where to Buy AOD-9604 for Research and Who Documents the Testing
Six of the seven vendors we compared in September list AOD-9604; Swiss Chems doesn't, and Peptide Plugs showed it sold out. We compared vial sizes, price per mg and whether each posts a certificate with a named lab and lot.
5 min read · Updated Oct 2026
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TB-500 Vendors (2026): Where to Buy TB-500 for Research and Who Documents the Testing
All seven vendors we compared in September list TB-500. We compared vial sizes, price per mg and whether each posts a TB-500 certificate that names the lab and the lot.
6 min read · Updated Oct 2026
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Epitalon Vendors (2026): Where to Buy Epitalon for Research and Who Documents the Testing
All seven vendors we compared in September list Epitalon (also spelled Epithalon). We compared vial sizes, price per mg and whether each posts a certificate that names the lab and the lot.
5 min read · Updated Oct 2026
