Peptide Sciences is a well-known US supplier focused on the domestic research market. PeptidesFromChina.co offers an alternative for buyers who want direct factory access, broader catalog depth, and COA-verified compounds without the US reseller markup.
Peptide Sciences purchases peptides from overseas manufacturers and sells through the US market. PeptidesFromChina.co connects research buyers directly to the Chinese synthesis facility — same origin, shorter chain, lower cost basis.
Each PeptidesFromChina.co order includes a full manufacturer COA with HPLC purity data, endotoxin results (where applicable), and batch identification. For select high-demand compounds we additionally provide independent third-party lab verification.
Our catalog covers 73+ research compounds including GLP-1 agonists (Semaglutide, Tirzepatide, Retatrutide), growth peptides, nootropics, longevity peptides, and reconstitution supplies. Stock is verified per-order against the active manufacturing batch — no speculative pre-stocking.
The PeptidesFromChina.co process: submit your request → pay $10 processing deposit → we verify stock with the facility → you approve the confirmed invoice → pay the final amount → ship. No surprises. No auto-billing. The deposit is fully credited to the final invoice.
We ship globally. Most orders to North America and Europe arrive within 10–20 business days. Stealth packaging and proper customs documentation are included. Buyers in Australia, the UK, and Canada are served regularly.