Precision. Transparency. Dependability.
Trusted API Supply for 503A and 503B Compounding Pharmacies
PeptidesAPI delivers pharmaceutical-grade active pharmaceutical ingredients sourced from GMP and FDA-registered manufacturers. Fully documented and ready to support regulated compounding environments.
Industries Served
Supporting Professionals Across Multiple Sectors
We proudly serve a range of regulated and research-focused industries with reliable peptide solutions.
Who We Are
Reliable Sourcing for Pharmaceutical-Grade Ingredients
PeptidesAPI is dedicated to supplying pharmaceutical-grade active pharmaceutical ingredients to licensed 503A compounding pharmacies, 503B outsourcing facilities, and authorized distributors.
Our sourcing and qualification process is designed to support the documentation, traceability, and consistency requirements of regulated compounding environments, ensuring you have the highest quality materials for your production needs.
Built for Compounding Professionals
Purpose-Built for 503A and 503B Facilities
All products are sourced from GMP and FDA-registered manufacturing partners, with NDC-supported products where applicable. Many of our manufacturing partners maintain Drug Master Files (DMFs), and the open portion is available to qualified customers upon request.
503A Compounding Pharmacies
Patient-specific, prescription-based compounding
503B Outsourcing Facilities
Bulk compounding with strict cGMP requirements
Pharmaceutical Distributors
Authorized supply chain partners
Procurement & Quality Teams
Documentation-first sourcing support
Why Industry Professionals Choose PeptidesAPI
Trusted by pharmacies, clinics, and research institutions for regulatory-grade peptide APIs.
GMP & FDA-Registered Manufacturers
We work exclusively with qualified manufacturing partners that meet strict regulatory and quality expectations.
NDC-Supported Products
Our APIs align with FDA NDC requirements to support pharmacy procurement workflows.
DMF Transparency
Where available, the open portion of Drug Master Files is shared with verified customers.
Independent Third-Party Testing
Each lot undergoes analytical verification for identity, purity, and potency.
Our API Portfolio
PeptidesAPI supplies a growing range of pharmaceutical-grade active ingredients for compounding applications.
Getting Started is Simple
Submit Your Application
Complete the new customer inquiry form with your pharmacy license and facility details.
Verification & Qualification
Our team reviews your credentials and verifies your facility type (503A, 503B, or distributor).
Account Activation
Your account is activated and you gain access to our full product catalog and pricing.
Place Your Order
Request quotes, review documentation packages, and secure your API supply with confidence.
Quality & Compliance
Quality and Documentation at Every Step
Quality assurance is integrated throughout our sourcing and distribution process. From manufacturer qualification through batch-level verification, PeptidesAPI prioritizes documentation, traceability, and supply consistency.
GMP-aligned manufacturing partners
FDA-registered facilities
NDC-supported products
Third-party analytical testing
Certificate of Analysis with each lot
Lot-level traceability
DMF open portion available where applicable
Trusted by Compounding Professionals
“PeptidesAPI has made API procurement significantly more straightforward for our facility. The documentation package with every lot saves us considerable compliance overhead.”
Director of Pharmacy Operations
503B Outsourcing Facility, Southeast US
“The transparency around DMF access and third-party testing gave our quality team the confidence they needed. Consistent supply, consistent documentation.”
Compounding Pharmacist
503A Independent Pharmacy
“Sourcing GLP-1 peptide APIs from a qualified supplier with NDC support has been essential for our procurement workflow. PeptidesAPI delivers on both.”
Procurement Manager
Pharmaceutical Distributor
Secure Your API Supply with Confidence
PeptidesAPI supplies active pharmaceutical ingredients to licensed compounding pharmacies, outsourcing facilities, and authorized distributors. Products are not intended for direct consumer use. All customers are subject to verification and qualification.