Atomik Labs vs Zesty Rat
Across the 27 products both vendors stock, Atomik Labs has the lower effective price per mg on 22 and Zesty Rat on 5. Atomik Labs lists 88 tracked listings across 50 products; Zesty Rat lists 43 across 31. On certificates of analysis the in-stock products we track rate limited at Atomik Labs and partial at Zesty Rat. Based on the certificates our crawler found; vendors may publish more than we index. These are price and document observations, not quality ratings, and neither vendor is endorsed.
Atomik Labs is a research-peptide vendor that lists 74 injectable peptides and 7 capsules, including Tesamorelin, Melanotan II and Selank.
- Price vs market median
- 5% above market
- Tracked catalog
- 50 products · $$
- Cheaper on
- 22 of 27 shared
- COA coverage
- Limited
Zesty Rat is a US research-peptide vendor that lists 34 injectable peptides, including Pinealon, TB-500 and SS-31.
- Price vs market median
- At market price
- Tracked catalog
- 31 products · $$
- Cheaper on
- 5 of 27 shared
- COA coverage
- Partial
Vendor facts
Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for Atomik Labs and Zesty Rat were extracted from the vendor's site and not yet reviewed by us.
Certificates on file
Coverage rates how many of the in-stock products we track have a certificate our pipeline read and matched to a catalog peptide. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products, and a certificate cannot show authenticity, chain of custody or sterility.
Carried by one vendor only
Only at Atomik Labs
23 products the other vendor does not list
- Ipamorelin$5.60
- NAD+$0.11
- Selank$3.50
- Semax$3
- Tesamorelin$5.50
- Tirzepatide$2.19
- Adamax$7.90
- Cardiogen$3.25
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Atomik Labs cheaper than Zesty Rat?
- On the 27 products both vendors stock, Atomik Labs has the lower effective price per mg on 22 and Zesty Rat on 5. Each side uses the cheapest in-stock listing we track for that product, after any public discount code, and prices change often.
- How much COA coverage does each vendor have?
- Atomik Labs: limited, newest test dated 2026-10-08. Zesty Rat: partial, newest test dated 2026-10-02. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products ourselves, and a certificate cannot prove authenticity or sterility.
- How do shipping and payment differ between Atomik Labs and Zesty Rat?
- Atomik Labs: we have not recorded shipping or payment details yet. Zesty Rat: ships from United States, shipping free, 2-4 days in transit, accepts card. Details come from each vendor's own site and can change without notice; check the storefront before ordering.