Best Tirzepatide Vendors
74 vendors we track carry Tirzepatide. The 50 that pass our testing gate are ranked below by PSR score, with the certificate each one posts for Tirzepatide, a price matched at 30mg and any reader code. For laboratory research use only.
- Carry it
- 74
Carry it
- Pass testing gate
- 50
Pass testing gate
- Lab-confirmed COAs
- 56
Lab-confirmed COAs
Want every carrier ordered by its Tirzepatide certificate instead, with sizes and stock? See the full Tirzepatide comparison. How a score is built: How we rate. How to check a certificate yourself: how to read a peptide COA.
Top 3 Tirzepatide vendors by PSR score
The highest PSR scores among open stores that carry Tirzepatide and pass our testing gate. Affiliate status plays no part in this list.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
#1 by PSR score
Zeptix Labs8.17Strong- Certificate
- Verified (opens in new tab)
- Lab
- Accumark LabsTier B+
- Purity
- 99.909%
- Tested
- Price
- $3.67/mg ($110.00 for 30mg)
#2 by PSR score
Peptix USA8.11Strong- Certificate
- Verified (opens in new tab)
- Lab
- ILS LaboratoriesTier B+
- Purity
- 99.67%
- Tested
- (first seen)
- Price
- No 30mg
#3 by PSR score
Southern Aminos8.09Strong- Certificate
- Verified (opens in new tab)
- Lab
- ILS LaboratoriesTier B+
- Purity
- 99.95%
- Tested
- Price
- $2.64/mg ($79.20 for 30mg)
Best Tirzepatide vendors with a reader discount
Affiliate partners that pass the testing gate and give readers a code that applies to Tirzepatide, in PSR score order. This block is a convenience only: the ranking below is the same with or without it.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
- Zeptix Labs8.17Strong
- DAAVY Research8.01Strong
- Luv Aminos7.90Strong
- Ameano Peptides7.80Strong
- LabFirst Peptides7.73Strong
- Honest Peptide7.71Strong
- Arctic Lab Supply7.09Strong
- NovaForge Labs6.89Fair
- JD BioWorks6.34Fair
- NextGen Peps5.95Fair
Every Tirzepatide vendor that passes the gate, by PSR score
50 vendors, highest PSR score first; equal scores are listed alphabetically. Price per mg is matched at 30mg, the size most carriers sell, so vials compare like for like. The certificate column is the vendor’s certificate for Tirzepatide only. Affiliate status never affects the order (how we keep it separate).
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Listed separately: 24 vendors outside the ranking
These carry Tirzepatide but do not meet our testing gate, so they are never placed in the ranking above, whatever their score. The gate records what we could verify; it is not a finding of a quality or safety problem.
Show 24 vendors that fail the testing gate
Best Tirzepatide vendors: frequently asked questions
Who is the best Tirzepatide vendor?
By PSR score, Zeptix Labs is the highest-rated open store carrying Tirzepatide that passes our testing gate (8.17/10, Strong). Peptix USA (8.11) and Southern Aminos (8.09) follow. The certificate each of them posts for Tirzepatide is shown beside the score, so a reader can check it before buying.
Where can I buy Tirzepatide with a discount code?
10 affiliate partners carrying Tirzepatide pass our testing gate and give readers a code that applies to it. The highest rated is Zeptix Labs (code PSR20, 20% off). We may earn a commission on those links; it never changes a score or a rank.
How are these Tirzepatide vendors ranked?
By PSR score, the published vendor score out of 10, built from lab testing, certificate verification, pricing, shipping, operating history and reviews under the rules on How We Rate. Equal scores are listed alphabetically. Price per mg and the certificate for Tirzepatide are shown but do not change the order, and affiliate status never does.
Why are some Tirzepatide vendors listed separately?
24 vendors carrying Tirzepatide do not meet our testing gate: third-party testing could not be established or independently verified. They are listed below the ranking rather than in it. The gate records what we could verify; it is not a finding of a quality or safety problem.
How do I check a Tirzepatide certificate of analysis?
Open the certificate from the vendor's row, confirm it names Tirzepatide and a batch, then look up the verification key on the testing laboratory's own site. 56 of the 74 Tirzepatide certificates we track were confirmed at the lab. Our guide on how to read a peptide COA walks through each field. For laboratory research use only.