Peptide Referee

Peptide Sciences shut down: what happened, and alternatives

Closed Checked Oct 15, 2026.

Peptide Sciences has closed. Reported closed in March 2026 by several industry newsletters and directories; the domain now serves a bot-protection page, so we could not read the site. Our check on Oct 15, 2026 found a bot-protection challenge.

See the history below for what happened, with sources.

Looking for a replacement? Jump to alternatives.

Be careful with any site using the Peptide Sciences name now: after a vendor closes, look-alike sites often reuse its name or domain. Check the domain's registration date and whether it's the same business before paying (how to check a vendor).

At a glance

Website
peptidesciences.com
Status
Closed
Domain registered
Dec 6, 2009 (16.9 years ago)
Registrar
Tucows Domains Inc.
Domain expires
Dec 6, 2029
First archived
Feb 7, 2011
Traffic rank (Tranco)
Outside the top 1 million

History and alerts

Peptide Sciences alternatives

Live vendors, ranked by transparency score. Payments from vendors never affect this order.

# Vendor Status Transparency Domain age COAs Ships to Prices tracked Lab tests
1 Pure Peptide Labs Live 90/100 12 months Batch COAs public US, worldwide 44 —
2 Peptidology Live 90/100 22 months Batch COAs public US 3 —
3 Coastal Peptides Live 88/100 2.8 years Batch COAs public US, Canada — —
4 Eros Peptides Live 87/100 3.4 years Generic COAs only US 14 —
5 Nationwide Peptides Live 85/100 11 months Batch COAs public US 38 —

Is something wrong?

If you run Peptide Sciences, or you have evidence that something here is out of date, email [email protected] with a link to the evidence. We re-check within five business days and log every change on our corrections page.

Evidence we used (15)