Head to head · October 2026
Extreme Peptides vs Paramount Peptides
Paramount Peptides scores higher, 76 to 52. The widest gap is testing & certificates. Same formula, same data fields, October 2026.
Factor by factor
| Factor | Extreme Peptides | Paramount Peptides | Edge |
|---|---|---|---|
| Testing & certificates | 28 | 88 | Paramount Peptides |
| Transparency | 72 | 100 | Paramount Peptides |
| Track record | 57 | 39 | Extreme Peptides |
| Catalog | 46 | 79 | Paramount Peptides |
| Pricing | 69 | 65 | Extreme Peptides |
| Ordering & service | 80 | 45 | Extreme Peptides |
Fact sheets side by side
| Extreme Peptides | Paramount Peptides | |
|---|---|---|
| Overall score | 52/100 (#30) | 76/100 (#4) |
| Status | Operating | Operating |
| Based in | US | Irvine, CA |
| Founded | 2010 | 2012 |
| Third-party testing | Not verified | Yes |
| Laboratories named | None named | Janoshik |
| Public certificates | Yes | Yes |
| Lot-specific certificates | Not verified | Yes |
| Formats | vials, bulk | vials, capsules, blends |
| Catalog size | — | ≈78 |
| BPC-157 5 mg listed price | $48.99 | — |
| Free shipping from | $99 | $500 |
| Payments | card, crypto, ach | Not stated |
| Ships internationally | No | No |
| Research-use disclaimer | Yes | Yes |
| FDA warning letter | None found | None found |
Read the full reviews: Extreme Peptides · Paramount Peptides. Both suppliers sell materials labeled for laboratory research use only.
Frequently asked questions
Which is better, Extreme Peptides or Paramount Peptides?
On our formula Paramount Peptides scores higher (76 vs 52). The largest gap is in testing & certificates (28 vs 88). "Better" depends on what you weight; both fact sheets are on this page.
Do both publish certificates of analysis?
Extreme Peptides: yes. Paramount Peptides: yes. Lot-specific certificates — Extreme Peptides: not verified; Paramount Peptides: yes.
Which is cheaper?
We could not compare a like-for-like listing; price tiers are mid (Extreme Peptides) and mid (Paramount Peptides).