Independent side-by-side comparison of Limitless Life Nootropics and YH Peptide — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Limitless Life Nootropics holds the stronger independent lab grade (C vs ungraded); YH Peptide has more published third-party tests (3 vs 0); Limitless Life Nootropics carries more community reviews (410).
Every figure below is either measured by an independent laboratory or read from the vendor's own website, and the source is named against it. PeptideAtlas is not affiliated with either vendor.
Limitless Life Nootropics has no independent Janoshik assays on file. YH Peptide: 3 independent Janoshik assays, across 3 substances, median measured purity 99.8%, most recent 2026-03-26.
| Attribute | Limitless Life Nootropics | YH Peptide |
|---|---|---|
| Independent lab grade | C | Not graded |
| Third-party tests | None published | 3 tests, avg purity 99.7% |
| Community rating | 4.3/5 (410 reviews) | No reviews |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | 2019 | Unknown |
| Substance | Limitless Life Nootropics | YH Peptide |
|---|---|---|
| Ghk-cu 50mg(CU50) | Not tested | 99.53% (1 assay, latest 2026-03-26) |
| Retatrutide 30mg(RT30) | Not tested | 99.81% (1 assay, latest 2026-02-19) |
| Tirzepatide 60mg(TR60) | Not tested | 99.90% (1 assay, latest 2026-02-19) |
| Checked | Limitless Life Nootropics | YH Peptide |
|---|---|---|
| Certificates of analysis | None found on the site | Not stated |
| Products listed | 24 | Not stated |
| Payment methods | Credit Card | Not stated |
| Ships to | United States, Worldwide | Not stated |
| Carriers | FedEx, USPS | Not stated |
| Research-use-only notice | Published | Not stated |
| Stated origin | United States | Not stated |
YH Peptide. Limitless Life Nootropics has no independent Janoshik assays on file. YH Peptide: 3 independent Janoshik assays, across 3 substances, median measured purity 99.8%, most recent 2026-03-26. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
We found no certificates of analysis anywhere on Limitless Life Nootropics' site, and we have not read YH Peptide's site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Limitless Life Nootropics states it ships to United States, Worldwide, and YH Peptide does not state one. Both are read from the vendors' own sites.
Full profiles: Limitless Life Nootropics, YH Peptide.
Full lab-test records: All 3 YH Peptide lab tests.
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