Peptide Therapy in California
38 listings · California
Browse 38 verified peptide businesses in California — clinics, compounding pharmacies, research labs, and trusted suppliers. All listings are reviewed by the The Peptide Alliance editorial team.
Nextgenpeps
Bacteriostatic Water 3ml Bacteriostatic Water 10ml BPC-157 5mg BPC-157 10mg BPC-157 / TB-500 10mg BPC-157 / TB-500 20mg TB-500 10mg GHK-Cu 50mg GHK-Cu 100mg HCG 5000iu GLP-RT 10mg GLP-RT 20mg GLP-RT 50mg GLP-TZ 10mg Cagrilintide 10mg GLOW (Blend) 50mg GLOW (Blend) 70mg Melanotan II (MT2) 10mg MT1 10mg PT-141 10mg MOTS-C 10mg SS-31 10mg NAD+ 500mg Tesamorelin 10mg Sermorelin 10mg Ipamorelin 10mg CJC-1295 with DAC 5mg CJC No DAC 5mg Semax 10mg Epithalon 10mg Pinealon 10mg Thymosin A-1 10mg KPV 10mg AOD-9604 5mg 5 Amino 1MQ 10mg VIP 10mg PNC 27 10mg SNAP-8 10mg L Carnitine 500mg SLU-PP-332 250mcg BPC-157 Capsules 60 caps BPC-157 / TB-500 Capsules 250mcg / 250mcg GLOW Capsules 250mcg / 250mcg / 1250mcg DHEA Capsules
LabFirst Peptides
LabFirst Peptides is a research peptide supplier in Santa Ana, California. Every size is listed with its price and cost per milligram, and volume tiers are fixed: 10% off 10 to 19 vials of one SKU, 15% off 20. Its release specification is public: identity by LC-MS, purity of at least 99% by RP-HPLC, and net content of at least 85% of the label. Lots are tested by Kovera Labs, an independent laboratory, and each published certificate links to Kovera's own verification page with the lot number printed on the vial. The site reports how many of its sizes carry a lot certificate and leaves the rest blank until their lots are tested. If an independent test of a vial does not match its lot certificate, LabFirst refunds that lot in full with no time limit. The catalog covers Retatrutide, Tirzepatide, Semaglutide, BPC-157, TB-500, GHK-Cu, NAD+, Tesamorelin, MOTS-c, SS-31, Semax, Selank and blends. Orders ship from Santa Ana by USPS with tracking, free over $150. Products are for laboratory research use only, not for human or animal use.
AminoVault
AminoVault is a premium U.S.-based research peptide supplier dedicated to raising the standard for quality, transparency, and scientific integrity. Every batch is manufactured to rigorous quality standards and independently verified through ISO/IEC 17025-accredited third-party laboratory testing for identity and purity, with batch-specific Certificates of Analysis available for complete traceability. Beyond peptides, AminoVault provides researchers with the documentation and confidence needed to support reliable, reproducible research. Built on a commitment to transparency rather than marketing hype, AminoVault delivers trusted research compounds, exceptional customer service, fast nationwide shipping, and an uncompromising focus on quality—making it the supplier of choice for researchers across the United States.
Elite Synthetics
Elite Synthetics is a leading research peptide provider based in Huntington Beach, specializing in a comprehensive catalog of high-quality compounds for laboratory and research applications. Their extensive product lineup includes popular research peptides such as Retatrutide, Tirzepatide, BPC-157, TB-500, and GHK-Cu, alongside specialized formulations like Wolverine, Glow, Klow and reconstitution solution (bac water). Whether you're sourcing established peptides or exploring emerging research compounds, Elite Synthetics delivers the variety and quality that researchers and businesses depend on. With a commitment to serving the global peptide community, they provide reliable access to compounds that support scientific advancement and research initiatives. Connect with Elite Synthetics today to discover how they can support your research needs.
Peptide Sciences
US-based research peptide supplier offering high-purity peptides synthesized domestically. Specializes in growth hormone peptides, weight loss peptides, and healing peptides backed by independent COAs.
Pure Health Peptides
California-based LLC offering US-made, third-party tested research peptides including BPC-157 and TB-500 blends. Every batch is verified with COAs published on their site for full transparency.
Amino Asylum
US-based supplier offering research peptides with multiple domestic warehouse locations in TX and DE. Known for competitive pricing and product variety.
Peptide Systems
US-based supplier offering HPLC/LC-MS verified peptides at 99%+ purity, including BPC-157, TB-500, and Sermorelin. All products come with certified Certificates of Analysis from independent third-party labs.
Phoenix Pharmaceuticals
B2B peptide supplier based in Silicon Valley serving academic labs, biotech, and pharma companies since 1993. Manufactures research peptides, antibodies, and assay kits for preclinical research.