Peptide Therapy in California

Browse 35 verified peptide businesses in California — clinics, compounding pharmacies, research labs, and trusted suppliers. All listings are reviewed by the The Peptide Alliance editorial team.

Browse by category

All (35)Peptide Brands (6)Clinics (12)Compounding Pharmacies (2)Research Labs (4)Wholesale Suppliers (2)Manufacturers (9)

Top cities in California

Los Angeles (15)San Francisco Bay Area (9)San Diego (4)Cypress (1)La Habra (1)Folsom (1)Sacramento (1)Danville (1)Fallbrook (1)Rocklin (1)

AnaSpec Peptide Supply

Fremont, CA-based peptide supplier offering a catalog of 20,000+ pre-made and custom peptides for academic and pharmaceutical research. Provides fluorescent dye conjugates, peptide libraries, and HPLC-purified research peptides.

Fremont, CA (US)National

Wholesale Suppliers

American Peptide Company

California-based custom peptide synthesis service providing academic and pharmaceutical researchers with high-purity catalog and custom peptides. Specializes in difficult sequences, cyclic peptides, and stapled peptides.

Sunnyvale, CA (US)National

Wholesale Suppliers