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Evidence-based GLP-1 & peptide discussion since 2023
ForumsBuyer BewareBlacklisted vendor compilation — updated March 2026

Blacklisted vendor compilation — updated March 2026

VendorMark Fri, Nov 24, 2023 at 5:20 PM 229 replies 40,831 viewsPage 1 of 20
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VendorMark
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Jan 2024
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Nov 24, 2023 at 6:45 PM#1
OFFICIAL BLACKLISTED VENDOR LIST — Updated March 15, 2026 This is the community-maintained blacklist of vendors confirmed to sell fraudulent, dangerous, or significantly substandard products. Vendors are added based on verified lab testing, documented scams, or pattern of credible complaints. TIER 1 — CONFIRMED SCAM/DANGEROUS (Do Not Purchase Under Any Circumstances): | Vendor | Reason | Evidence | Date Added | |--------|--------|----------|------------| | PeptideKingz | Zero active ingredient in semaglutide | Janoshik HPLC #JAN-2026-03881 | Mar 2026 | | PeptideElite | Exit scam, $8,400+ stolen | 27 confirmed victims | Mar 2026 | | PremiumPeptideCo | Exit scam (same operator as PeptideElite) | Domain analysis, pattern match | Mar 2026 | | ResearchChemDirect | Exit scam (same operator as PeptideElite) | Domain analysis, pattern match | Mar 2026 | | SynthPure Labs | Contaminated product, hospitalization | ER records, member testimony | Feb 2026 | | PurityFirst Peptides | Fake COAs, wrong peptide in vials | Janoshik testing, COA forensics | Jan 2026 | | AlphaResearch Co | BPC-157 sold as semaglutide | Janoshik HPLC | Dec 2025 | | PeptideWarehouse | Endotoxin-positive products | LAL testing | Nov 2025 | TIER 2 — CAUTION (Significant Quality Issues Documented): | Vendor | Reason | Evidence | Date Added | |--------|--------|----------|------------| | PepSource | Systematic under-dosing (43-58% of label) | Multiple Janoshik HPLC reports | Mar 2026 | | BargainPeptides | Inconsistent potency (40-95% range) | 4 Janoshik tests, wide variance | Feb 2026 | | QuickShipRx | Degraded product, poor cold chain | Multiple member reports, 1 test | Jan 2026 | | ValuePeptide Co | Under-dosed tirz (67% of label) | Janoshik HPLC | Dec 2025 | TIER 3 — SOCIAL MEDIA SCAMS (Never Buy From Social Media): All Instagram, TikTok, Facebook, and Telegram peptide sellers should be considered scams until proven otherwise. Specific accounts documented: -.rx.official /.peptide.solutions (same operator) -.direct.usa -.shop -.deals -.wholesale - Multiple Telegram channels HOW TO REPORT A VENDOR: Submit evidence to ModMail with: vendor name, order details, test results (if available), and any communication screenshots. We verify all reports before adding to the list.
46 10DebRD_ATL, KristenIndy, MarkLI_maint and 43 others
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TrialTracker_MD
Senior Member
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15,678
Jan 2024
Maryland
Nov 24, 2023 at 7:02 PM#2
Thank you mods for maintaining this. This list has probably saved thousands of dollars and prevented real harm. I want to add context on a few of these: PeptideKingz — Their website is now down. They were selling primarily through their own site and Reddit promotions. If you see a new vendor pop up with similar branding or COA formatting, please flag it. PeptideElite/PremiumPeptideCo/ResearchChemDirect — This is one serial scammer running the same playbook. Based on domain registration patterns, expect a new iteration within 30-60 days. We need to be vigilant. SynthPure Labs — This is the most serious one. Someone was literally hospitalized. Criminal complaint has been filed.
50 4stefan_berlin, Dr.EM_Chicago, pete_RVA and 47 others
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FDA_TrackerJim
Senior Member
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7,890
Feb 2024
Rockville, MD
Nov 24, 2023 at 7:19 PM#3
As someone who just joined this community and is researching compounded semaglutide for the first time, this list is incredibly valuable. It's also terrifying. Question: is there a corresponding "approved" or "vetted" vendor list? I want to make sure I'm buying from somewhere safe but the number of scams here is overwhelming.
Last edited: Nov 24, 2023 at 10:19 PM
43 1MikeNYC_runner and 40 others
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Janoshik Analytical — Independent Testing

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NicoleRaleigh
Member
356
1,567
Aug 2024
Raleigh, NC
Nov 24, 2023 at 7:36 PM#4
Yes! We maintain a vetted vendor list in the wiki (pinned post in the sidebar). Vendors on that list have: 1. Multiple independent lab tests confirming label accuracy (>90% of claim) 2. Consistent positive community feedback over 6+ months 3. Responsive customer service with documented issue resolution 4. Proper cold chain shipping 5. Third-party COAs from recognized labs Please note: even vetted vendors should be periodically tested. Trust but verify. We recommend testing at least your first order from any vendor.
Last edited: Nov 24, 2023 at 8:36 PM
26 20VendorMark, COA_Karl, MikeFit_NJ and 23 others
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AttorneyGrant
Member
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Apr 2024
Washington, DC
Nov 24, 2023 at 7:53 PM#5
I want to flag something. I've noticed PeptideKingz has started posting on other forums under the name "PeptideKingdom." Same writing style, similar website layout, nearly identical COA templates. I'm 90% sure it's a rebrand. Has anyone ordered from PeptideKingdom? If so, PLEASE send a vial to Janoshik before using it.
41 16Dr.GastroMayo, JakeBK_lifts, DerekSJ_a1c and 38 others
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