Sereno GPO · serenoGPO.com

FDA-compliant products.
Network pricing.
Zero compromise.

The only Group Purchasing Organization built exclusively for longevity medicine practices — giving physician clinics, med spas, and wellness centers direct access to USA-made, batch-tested 503B outsourcing facility products and 503A patient-specific compounds — at pricing no individual practice can negotiate alone. We only work with licensed physicians — we don't sell to the public.

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503B
Compliant sourcing only
100%
USA-manufactured
COA*
On every batch
OIG
Safe-harbor structure

FDA Enforcement Notice: Wholesale distribution of compounded drugs through brokers or middlemen violates FDCA §503B. Compliant sourcing means 503B outsourcing facilities and licensed 503A pharmacies — direct to the practitioner, never through brokers.

What We Provide

Everything your practice needs
in one compliant platform.

Sereno GPO is not a vendor. It is a Group Purchasing Organization that aggregates buying power across a national network of practices — giving every member access to FDA-compliant products, legal structure, expert educators, and business support that would otherwise cost multiples more to assemble independently.

01
503B & 503A Compliant Sourcing
Direct access to the full compliant compounding landscape — FDA-registered 503B outsourcing facilities for office-use products and licensed 503A pharmacies for patient-specific prescriptions. All sterile injectable preparations in our network meet USP <797> sterility standards. Every product USA-manufactured, independently tested, Certificate of Analysis on every batch.
Core Service
02
Network Pricing Power
Your practice joins a collective that negotiates as one. Aggregated volume secures pricing no individual clinic, med spa, or physician practice can obtain directly — typically materially below retail 503B rates. Transparent pricing, no markups.
GPO Structure
03
Audit-Ready Compliance Documentation
Every membership includes the documentation package your medical director and attorney need: supplier registrations, DSCSA pedigree records, and a written compliance framework reviewed by our healthcare regulatory counsel.
Legal Infrastructure
04
Prior Authorization for GLP-1s
Dedicated prior authorization processing for GLP-1 medications. We manage the administrative burden of insurance approvals so your team focuses on patient care, not paperwork. Faster approvals, fewer denials, documented outcomes.
GLP-1 Program
05
MSO: Business, Education and Marketing Services
Through Sereno MSO, members access practice optimization, sales strategy development, marketing content creation, provider & patient education, staff training, and program build-out support — the operational infrastructure that turns a compliant practice into a growing one.
MSO Services
The Compliance Landscape

Buying wholesale
is a federal violation.

FDCA §503B prohibits compounded drugs from moving through brokers or resellers. There are two compliant facility types — 503B outsourcing facilities and licensed 503A pharmacies — and only a GPO gives you structured access to both at network pricing. All sterile injectable products in our network are independently verified and documented to the highest standards in the industry. Every supplier in the Sereno GPO network sells direct to licensed physicians and practices — no middlemen, brokers, or wholesalers participate in the process.

Wholesale Brokers
Gray-market vendors
Federal violation.
Illegal distribution channel. No pedigree. No COA. Full liability transfers to your practice the moment you administer the product.
Direct 503A / 503B
Individual pharmacy
Compliant. Retail pricing.
503A patient-specific and 503B office-use products are legally sound when purchased direct — but you pay retail with no volume leverage, no documentation infrastructure, and no supplier redundancy.
Sereno GPO
OIG safe-harbor structure
Compliant. Best pricing.
Aggregated network volume negotiates across 503B outsourcing facilities and licensed 503A pharmacies. Every member receives pricing no individual practice can match — with full legal documentation on every order and USP <797> compliance verified for all injectable products.

Why this matters for med spas: Your business operates under a supervising physician whose license is on the line for what gets administered under their delegation. Medical directors are walking away from practices that cannot document their supply chain. A med spa without a medical director is a med spa that is closed.

Why this matters for physician clinics: A defensible state board audit response requires a documented FDA-registered supplier, current DSCSA pedigree, a valid compounding pathway, and a written compliance framework. Penalties reach license suspension and FDA civil penalties up to $597,317 per violation.

Formulary

Built around your practice.
Not a fixed catalog.

No two member practices order the same formulary. Sereno GPO reviews your specialty, patient volume, and clinical use cases, then builds a formulary tailored to what your practice actually needs — sourced through the compliant pathway appropriate for each category, at network pricing no individual practice can negotiate alone.

GH Axis & Anti-Aging
Peptide Therapies
Compliance-Verified
Men's Hormone Therapy
TRT & Adjunct Support
Compliance-Verified
Women's Hormone Therapy
BHRT
Compliance-Verified
Regenerative & Tissue Repair
Peptide Therapies
Compliance-Verified
Sexual Health & Libido
Peptide & Hormone Support
Compliance-Verified
Cognitive & Mood
Peptide Therapies
Compliance-Verified
Weight Loss & Metabolic Health
GLP-1 & Adjunct Therapies
Compliance-Verified
Cellular Health & Longevity
IV Therapy & Peptides
Compliance-Verified
Skin & Aesthetic Peptides
Topical & Injectable
Compliance-Verified
Custom Formulations
Patient-Specific
Built to Your Rx
+ Expanding
Formulary updated quarterly

We don't publish a public catalog — we build a curated formulary for each practice. Formulary access and pricing are member-gated and specific to your practice. Don't see something you need? We can get it for you. Just ask!

Compliance Landscape

503A, 503B, and USP <797>.
Understanding the distinctions.

Most practices are unfamiliar with the regulatory distinctions that govern compliant compounding. Here is what each term means and why it matters for your practice.

503B Outsourcing Facility
The highest-volume, highest-compliance tier.
503B outsourcing facilities are FDA-registered manufacturers that produce compounded drugs at scale for office use — without requiring individual patient prescriptions. They operate under cGMP (current Good Manufacturing Practice) standards, the same quality framework applied to commercial pharmaceutical manufacturers.
No patient-specific prescription required for office stock
cGMP manufacturing — same standard as commercial pharma
Full DSCSA pedigree — traceable from facility to your shelf
Certificate of Analysis on every batch, independent third-party tested
Must ship direct facility → licensed practitioner — no brokers
Best for: High-volume clinic use of peptides, hormones, and injectables where office stock is preferable to individual prescription routing.
503A Licensed Pharmacy
Patient-specific. Prescription-required.
503A pharmacies are state-licensed compounding pharmacies that prepare medications for individual patients based on a valid prescription from a licensed practitioner. They are the traditional compounding model — capable of formulating products in dosages, strengths, and delivery forms not commercially available, tailored to a specific patient's clinical needs.
Individual patient prescription required for every order
Custom dosing, strength, and delivery form for each patient
Access to formulations not available through 503B pathways
Regulated by state pharmacy boards under USP standards
Sereno GPO connects you to vetted 503A partners at network pricing
Best for: BHRT, individualized hormone protocols, and formulations requiring patient-specific dosing that cannot be addressed by off-the-shelf 503B products.
USP <797> Sterile Standard
The sterility standard applied at every compliant facility.
USP Chapter <797> is the United States Pharmacopeia's mandatory standard for sterile compounding — covering facilities, equipment, personnel training, environmental monitoring, and testing protocols required for any compounded preparation intended to be sterile. Every injectable peptide and hormone administered in-office must originate from a USP <797>-compliant facility.
Mandatory for all injectable compounded preparations
Covers ISO-classified cleanroom environments and airflow standards
Requires endotoxin testing, sterility testing, and beyond-use dating validation
All Sereno GPO 503B and 503A injectable suppliers are <797>-compliant
Non-797-compliant injectable products are a direct patient-safety liability
What to verify: When sourcing any injectable — peptides, testosterone, hormones — confirm your supplier (503A or 503B) is USP <797>-compliant. All Sereno GPO injectable suppliers meet this requirement. Non-compliant injectable products are a direct patient-safety and liability exposure.
How Sereno GPO Selects the Right Pathway
When you submit your formulary request, our compliance team evaluates each product against current FDA regulatory status, your clinical use case, and your patient volume — then routes every SKU through the highest-compliance, lowest-cost pathway available. You don't manage the complexity. We do.
Sereno MSO

Compliant practice.
Growing business.

Compliance is the foundation. Growth is the goal. Through Sereno MSO, GPO members access a full suite of clinical education tools, practice management, and marketing services designed specifically for longevity medicine practices.

Practice Optimization
Workflow analysis, service menu design, pricing strategy, and operational infrastructure review — turning a compliant practice into an efficient one.
Sales Strategy
Patient acquisition frameworks, consultation conversion training, membership program design, and upsell pathway development tailored to longevity medicine.
Marketing Content
Done-for-you educational content, social media strategy, email campaigns, and patient communication frameworks — built on compliant clinical messaging.
Staff Training
Comprehensive onboarding for new hires, clinical protocol training for injectors, and patient communication coaching for your front-desk and coordinators.
Program Launch Support
Full build-out support for new program launches — peptide programs, hormone optimization, and weight management — from protocol to patient collateral.
Compliance Infrastructure
Consent frameworks, patient intake templates, documentation standards, and audit preparation — so your practice is ready for any oversight event.
Clinical Education
Direct access to expert educators in peptide therapy and hormone optimization — protocol development, staff certification, and ongoing CME-aligned training for your clinical team.
GLP-1 Prior Authorization
End-to-end prior authorization management for GLP-1 medications — eligibility review, documentation, submission, and appeals — so your team isn't buried in payer paperwork.
How to Join

Up and running
in four steps.

STEP 01
Submit Your Form
Already sourcing? Request a Practice Audit — we analyze your current suppliers, verify compliance, and quote you a better price. New to peptides? Complete the MSO consultation form. No patient data required.
STEP 02
Free Analysis
We benchmark your current sourcing and pricing against Sereno network rates and flag every compliance gap in your current vendor relationships. Report delivered within 2 business days.
STEP 03
Membership Agreement
Review our GPO membership structure — designed to OIG safe-harbor standards. Your attorney reviews. our counsel's published analysis is available for reference. You decide.
STEP 04
First Compliant Order
Place your first order at network pricing with full DSCSA documentation. Your educator introduction is scheduled. Your compliance package is delivered. Your practice is protected.
Get Started

Ready to join the network?
Choose your path.

Both pathways lead to the same place — a compliant, well-priced, growing longevity medicine practice backed by the Sereno GPO and MSO network.

Already Sourcing Peptides
Request a Compliance & Pricing Audit
Already buying peptides or longevity medicine products? Tell us who you’re purchasing from, what you’re buying, and upload a recent invoice. We’ll audit your supplier’s compliance status, verify where the product is actually made, and deliver a side-by-side quote for the same products from a fully documented source.
Request a Practice Audit
New to Peptides & Longevity Medicine
Start a New Program — MSO Consultation
For clinics and med spas that want to launch a peptide or longevity medicine program. Our MSO team guides you from zero — compliance, products, protocols, pricing, and marketing — all the way to your first patient.
Schedule MSO Consultation