Peptide Sciences previously appeared in this directory as a catalog-depth supplier. The company has since announced a voluntary shutdown and no longer sells research products. This page is kept as a status notice so past readers don't land on stale praise for a supplier that no longer operates — it is not a recommendation to visit or order from any site using the name.
Peptide Sciences' own site now displays a shutdown notice stating the company has voluntarily discontinued sales and retains its name and trademarks. It explicitly warns that any platform, entity, or individual claiming affiliation, successor status, or authorization to sell its products is unauthorized and fraudulent.
Because the original company has shut down and publicly disclaims any successor, a site or marketplace listing still using the Peptide Sciences name is not something this directory can vouch for. Do not enter payment details on peptidesciences.com or lookalike domains expecting the original supplier's testing and shipping standards to still apply.
If you ordered from a site claiming to be Peptide Sciences after this shutdown and have concerns about the transaction, treat it the same as any other unverified online purchase and follow up with your bank or card issuer directly.
Readers who came here for a broad-catalog, testing-tab-forward supplier can compare current alternatives like Core Peptides, BioInfinity Lab, or Solira Lab on the supplier hub.
Peptide Sciences is no longer an active supplier. This listing exists only to prevent confusion — for a current recommendation, use the supplier hub.