Peptide Sciences shut down: what happened and verified alternatives
Peptide Sciences replaced its store with a shutdown notice on 6 March 2026 and has not reopened. Below: what the public record shows, with dates and sources, and the listed vendors that carry the same core products.
- Core products compared
- 12
Core products compared
- Listed alternatives
- 8
Listed alternatives
What is publicly known
The peptidesciences.com store was replaced by a single notice stating that the company had decided to voluntarily shut down operations and discontinue the sale of its research products. Contemporary reports describe the notice appearing that afternoon with no catalogue or cart.
The notice gave no reason for the closure and, according to reports at the time, no refund process or transition plan.
Archived captures of the homepage on 8 March, 15 April, 4 July and 12 October 2026 all show the same shutdown notice.
Sources
- Peptide Sciences Is Dead: Inside the Rise and Fall of the Gray Market's Biggest Name, The Peptide List (Substack),
- Newsletter issue on the Peptide Sciences closure, Project Biohacking newsletter,
- peptidesciences.com homepage, archived capture showing the shutdown notice, Internet Archive Wayback Machine,
- peptidesciences.com homepage, archived capture still showing the notice, Internet Archive Wayback Machine,
Sources checked on 3 November 2026. This page reports what the sources state and does not speculate about causes.
Listed vendors carrying the same core products
Peptide Sciences's archived store listed 12 of the products on our core list: BPC-157, TB-500, GHK-Cu, Tesamorelin, Retatrutide, Selank, Ipamorelin, Semax, Tirzepatide, PT-141, MOTS-c and Sermorelin (archived November 3, 2025). The vendors below are taking orders and carry at least 8 of them, ordered by published score.
This list is generated from current scores. Affiliate status never affects a score or a position here; see affiliate independence and how we rate.
- 1. Zeptix LabsCarries 10 of 128.17
- 2. Southern AminosCarries 11 of 128.09
- 3. Amino ClubCarries 12 of 128.08
- 4. Prime PeptidesCarries 10 of 127.94
- 5. Luv AminosCarries 9 of 127.90
- 6. Modern AminosCarries 10 of 127.88
- 7. Pure Health PeptidesCarries 11 of 127.88
- 8. Ameano PeptidesCarries 10 of 127.80
Before ordering from any source, check its certificates with the issuing laboratory: see how to read a peptide COA. Research use only.
Peptide Sciences: Frequently Asked Questions
Is Peptide Sciences still open?
No. Peptide Sciences replaced its store with a shutdown notice on 6 March 2026 and has not reopened. The dated sources are listed on this page.
Why did Peptide Sciences close?
The closure notice gave no reason, and we found no official statement explaining it. We do not speculate.
Which vendors carry the same products as Peptide Sciences?
Of the listed vendors taking orders that carry most of Peptide Sciences's core products (BPC-157, TB-500, GHK-Cu, Tesamorelin, Retatrutide, Selank, Ipamorelin, Semax, Tirzepatide, PT-141, MOTS-c, Sermorelin), the highest scored are Zeptix Labs (8.17), Southern Aminos (8.09), Amino Club (8.08). The list is generated from current scores; affiliate status never affects them.
Are these products for human use?
No. The products discussed on this site are sold for laboratory research use only, and nothing here is medical advice.