October 2026 issue · Editors' star ratings, never reader reviews · How we rate
Rated.Peptides

A buyer's magazine for research peptide suppliers

Head to head · October 2026

Paramount Peptides or UK Peptides?

On our stars Paramount Peptides comes out ahead, 3.6 to 2.7. Both let you open a certificate before you spend anything, so paperwork will not separate them for most buyers. UK Peptides takes cards and Paramount Peptides does not, which decides it for anyone who wants chargeback rights.

3.6 / 5
Editors’ rating, not reader reviews
Paperwork4.4
Company3.5
Price3.3
Shopping3.1
2.7 / 5
Editors’ rating, not reader reviews
Paperwork1.0
Company3.2
Price3.8
Shopping3.7

At a glance

Paramount Peptides

  • StatusTrading
  • BasedIrvine, CA
  • Trading since2012
  • Outside laboratoryYes
  • Laboratory namedJanoshik
  • Certificates open to allYes
  • Certificates per lotYes
  • Reference vialNot listed
  • Free shipping from$500
  • Ways to payNot stated
  • Ships abroadNo
  • ShelfAbout 78; vials, capsules, blends
  • FDA letterNone on record

UK Peptides

  • StatusTrading
  • BasedMiddlesbrough, England
  • Trading since2012
  • Outside laboratoryNo
  • Laboratory namedNone
  • Certificates open to allYes
  • Certificates per lotNot verified
  • Reference vialNot listed
  • Free shipping fromNot stated
  • Ways to paycard, wire
  • Ships abroadYes
  • ShelfAbout 79; vials
  • FDA letterNone on record

Both companies sell materials labeled for laboratory research use only. Full reviews: Paramount Peptides · UK Peptides.

Reader questions

So, Paramount Peptides or UK Peptides?

On our stars Paramount Peptides comes out ahead, 3.6 to 2.7. Both let you open a certificate before you spend anything, so paperwork will not separate them for most buyers. UK Peptides takes cards and Paramount Peptides does not, which decides it for anyone who wants chargeback rights. The widest gap between them is in paperwork, where Paramount Peptides leads.

Can I read a certificate from each before I order?

At Paramount Peptides the certificates are open to anyone and each one is tied to a lot. At UK Peptides the certificates are open to anyone.

Are these reader reviews?

No. Both ratings come from our published formula applied to facts on each supplier’s own pages and in public records. Nobody can submit a rating here.