Independent side-by-side comparison of LimitlessBioChem and Paradigm Peptides — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Paradigm Peptides holds the stronger independent lab grade (ungraded vs A); LimitlessBioChem has more published third-party tests (1 vs 0); Paradigm Peptides carries more community reviews (390).
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.
LimitlessBioChem: 1 independent Janoshik assay, most recent 2026-02-13. Paradigm Peptides has no independent Janoshik assays on file.
| Attribute | LimitlessBioChem | Paradigm Peptides |
|---|---|---|
| Independent lab grade | Not graded | A |
| Third-party tests | 1 test | None published |
| Community rating | 4.1/5 (190 reviews) | 3.5/5 (390 reviews) |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | 2020 | 2014 |
| Substance | LimitlessBioChem | Paradigm Peptides |
|---|---|---|
| Nad+ 400 Mg | purity not reported (1 assay, latest 2026-02-13) | Not tested |
| Checked | LimitlessBioChem | Paradigm Peptides |
|---|---|---|
| Certificates of analysis | None found on the site | Not stated |
| Products listed | 105 | Not stated |
| Public pricing | Listed on the site | Not stated |
| Payment methods | Bank Transfer, Credit Card | Not stated |
| Ships to | United States, United Kingdom, Europe, Australia, New Zealand, Worldwide | Not stated |
| Research-use-only notice | Published | Not stated |
| Stated origin | Hong Kong | Not stated |
LimitlessBioChem. LimitlessBioChem: 1 independent Janoshik assay, most recent 2026-02-13. Paradigm Peptides has no independent Janoshik assays on file. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
We found no certificates of analysis anywhere on LimitlessBioChem's site, and we have not read Paradigm Peptides' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
LimitlessBioChem states it ships to United States, United Kingdom, Europe, Australia, New Zealand, Worldwide, and Paradigm Peptides does not state one. Both are read from the vendors' own sites.
Full profiles: LimitlessBioChem, Paradigm Peptides.
Full lab-test records: All 1 LimitlessBioChem lab test.
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