Wholesale Peptide Suppliers & Distributors

Compare wholesale peptide suppliers, peptide distributors, and bulk suppliers serving resellers, laboratories, institutions, and other commercial buyers. Listings include both inventory-holding distributors and high-volume wholesale businesses. Showing 44 listed suppliers. A distributor may source from an upstream manufacturer rather than produce peptides directly. Before ordering, confirm manufacturer identity, batch-specific COAs, lot traceability, storage conditions, testing methods, minimum order quantities, and applicable import requirements.

Directory listing last reviewed October 2026.

What is a wholesale peptide supplier?

A wholesale peptide supplier sells larger B2B quantities to resellers, laboratories, institutions, or other commercial buyers. It may manufacture peptides or distribute material produced by another company. Compare minimum order quantities, price breaks, batch sizes, private-label options, fulfillment regions, and whether inventory is already released. Request every quote against the same specification — sequence or catalog product, quantity, purity target, analytical package, and delivery terms — so wholesale pricing is comparable across suppliers.

Peptide distributors

A peptide distributor can simplify domestic inventory, documentation, and logistics, but may not control synthesis. Require disclosure of the upstream manufacturer, source batch, storage history, and the relationship between the supplied product and its COA. Distributors suit buyers that value in-region stock and faster fulfillment; direct manufacturers suit buyers that need batch control and custom specifications.

Bulk peptide sourcing checks

Use batch-specific HPLC and mass-spectrometry results, quantity or content testing, and lot traceability when comparing bulk peptide suppliers. Confirm MOQs, batch sizes, retest dates, and storage and shipping conditions before committing. Review third-party tested suppliers and suppliers with COAs as starting points, and compare wholesale suppliers in China against US wholesale suppliers where supply-chain diversification matters.

GL Biochem (Shanghai)

BioLongevity Labs

Hongzi Peptide

Liyu Daily

Chengdu Shengnuo Biopharm

Shenzhen Lifeworth

Hangzhou Leap Chem

BizPeptide

NuRev Peptides

Bulk Peptides

Peptide Pros

PeptideHQ