Independent data on research peptide vendors
We check who vendors are and what they can prove, track what they charge per milligram every day, and log every shutdown and warning letter. No vendor can pay for a better rank.
205
vendors tracked (192 active)
4,740
price listings, refreshed Oct 15, 2026
82
peptides price-compared
38
alerts: closures, warning letters, lawsuits
- Best peptide vendors
- Third-party tested
- Cheapest vendors
- Price index
- Shutdowns and warnings
- Data reports
- Ships to the US
- Ships to Canada
- Ships to the UK
- Ships to the EU
- Ships to Australia
Most transparent vendors right now
Live vendors with all six checks complete, by score. See the full ranking or the complete vendor list.
| # | Vendor | Status | Transparency | Prices tracked |
|---|---|---|---|---|
| 1 | Pure Peptide Labs | 90 | 44 | |
| 2 | Peptidology | 90 | 3 | |
| 3 | Coastal Peptides | 88 | ||
| 4 | Eros Peptides | 87 | 14 | |
| 5 | Nationwide Peptides | 85 | 38 | |
| 6 | Mile High Compounds | 85 | 2 | |
| 7 | Go Alpha Labs | 83 | 47 | |
| 8 | Evolve BioPep | 83 | 27 | |
| 9 | Particle Peptides | 83 | 9 | |
| 10 | Pure Lab Peptides | 82 | 59 |
Price index snapshot
| Peptide | Vendors | Lowest | Median |
|---|---|---|---|
| Retatrutide | 22 | $1.17/mg | $4.69/mg |
| Tirzepatide | 22 | $0.875/mg | $3.46/mg |
| GHK-Cu | 91 | $0.170/mg | $0.590/mg |
| BPC-157 | 82 | $1.52/mg | $5.28/mg |
| Tesamorelin | 78 | $2.35/mg | $6.62/mg |
| TB-500 | 80 | $1.80/mg | $6.17/mg |
| CJC-1295 with DAC | 31 | $4.16/mg | $10.40/mg |
| Ipamorelin | 77 | $1.75/mg | $5.42/mg |
| Semaglutide | 19 | $1.36/mg | $4.89/mg |
| NAD+ | 70 | $0.035/mg | $0.100/mg |
Latest alerts
- Oct 15, 2026: Injectify says it is closing
- Oct 15, 2026: PureRawz no longer sells research chemicals
- Sep 28, 2026: TGA takes former peptide company BioV8 and its directors to court
- Sep 27, 2026: Chameleon Peptides closes to new customers
- Aug 24, 2026: FDA warning letter to TXP Innovations LLC (Tex Peptides)
How we're different
Evidence, not opinions
Every score comes from six public checks, each linked to its source. Methodology.
Real prices, every day
$/mg from vendors' own product feeds, with the transparency score beside every price. Price index.
Shutdowns and warnings
Every closure, raid, FDA warning letter and look-alike domain we find, dated and sourced. Alerts.
No paid placements
Vendors can't buy a rank, a review or removal. How we make money.
Guides
- Gray-Market GLP-1s: Semaglutide, Tirzepatide, Retatrutide
- How to Compare Peptide Prices Per Milligram
- How to Read a Peptide COA and Spot a Fake
- How to Tell if a Peptide Vendor Is Legit: 6 Checks
- Look-Alike Peptide Vendor Sites: How to Spot Them
- Peptide Testing Explained: HPLC, LC-MS and More
- Peptide Vendor Shutdowns: What Happened and What to Do
- Research Peptide Legal Status: US, UK, EU, CA, AU
- What 'Research Use Only' Means on Peptides
All guides, including peptides compared side by side.