Paramount Peptides vs Peptide Warehouse
Paramount Peptides scores higher, 76 to 61. The widest gap is transparency. Same formula, same data fields, October 2026.
Factor by factor
| Factor | Paramount Peptides | Peptide Warehouse | Edge |
|---|---|---|---|
| Testing & certificates | 88 | 82 | Paramount Peptides |
| Documentation depth | 65 | 63 | Paramount Peptides |
| Transparency | 100 | 40 | Paramount Peptides |
| Track record | 39 | 11 | Paramount Peptides |
| Catalog | 79 | 70 | Paramount Peptides |
| Pricing | 65 | 69 | Peptide Warehouse |
| Ordering & service | 45 | 80 | Peptide Warehouse |
Fact sheets side by side
| Paramount Peptides | Peptide Warehouse | |
|---|---|---|
| Overall score | 76/100 (#3) | 61/100 (#20) |
| Status | Operating | Operating |
| Based in | Irvine, CA | US |
| Founded | 2012 | Not stated |
| Third-party testing | Yes | Yes |
| Laboratories named | Janoshik | Freedom Diagnostics |
| Public certificates | Yes | Yes |
| Lot-specific certificates | Yes | Yes |
| Formats | vials, capsules, blends | vials, blends |
| Catalog size | ≈78 | ≈55 |
| BPC-157 5 mg listed price | — | $52.99 |
| Free shipping from | $500 | $299 |
| Payments | Not stated | card, zelle, crypto |
| Ships internationally | No | No |
| Research-use disclaimer | Yes | Yes |
| FDA warning letter | None found | None found |
Read the full reviews: Paramount Peptides review · Peptide Warehouse review. Both suppliers sell materials labeled for laboratory research use only.
Both appear on: US-based suppliers · Suppliers with public certificates of analysis · Lot-level third-party testing · Suppliers with peptide blends.
The factor that separates them
The widest gap is transparency (100 vs 40). Transparency fields are listed in the red flags we record.
Related comparisons
Limitless Biotech vs Peptide Warehouse · Ascension Peptides vs Paramount Peptides · Peptide Warehouse vs Verified Peptides
Frequently asked questions
Which is better, Paramount Peptides or Peptide Warehouse?
On our formula Paramount Peptides scores higher (76 vs 61). The largest gap is in transparency (100 vs 40). "Better" depends on what you weight; both fact sheets are on this page.
Do both publish certificates of analysis?
Paramount Peptides: yes. Peptide Warehouse: yes. Lot-specific certificates — Paramount Peptides: yes; Peptide Warehouse: yes.
Which is cheaper?
We could not compare a like-for-like listing; price tiers are mid (Paramount Peptides) and mid (Peptide Warehouse).