Precision
Peptide Therapy Tailored to You

Optimize performance and increase vitality with personalized peptide therapy.

what are peptides?

Peptides are powerful biological messengers that help regulate key processes in your body — from metabolism and tissue repair to immune function and hormonal balance.
At Extension Health, we harness clinically validated peptide therapies to support your unique health goals, whether you’re seeking enhanced recovery, improved energy, cognitive clarity, or hormonal optimization.

Amino acids

Individual building blocks of protein

Proteins

Made up of 100+ peptides linked together

Peptides

Made of up 2-50 amino acids

what is peptide therapy?

Peptide Therapy supplements your natural levels with synthetic peptides that have been formulated to mimic naturally occurring ones to help your body’s vital systems function smoothly.

What Peptide Therapy Can Support:

Book $250 consult,
Get $250 credit

Tailored to your biology.

Meet 1:1 with a clinician—virtually or in-person—to build a custom peptide plan for fat loss, inflammation reduction, and optimized performance. Credit applies to orders over $1,000.

Peptides Our Patients Love

BPC-157

Fast ACting

Repairs + protects tissue at the cellular level

Elite Peptide Stacks

Most advanced

Optimizes recovery, cognitive function, energy, + performance

Semaglutide

Most Popular

Targets hunger and metabolism at the hormonal Level

Get $250 credit when booking

the extension health experience

Extension Health was founded on the legacy of Hudson Medical, one of New York City’s most trusted and experienced clinics in pain management.

Our peptide therapy program is designed to guide patients through the safe and effective use of peptides, tailored to individual health goals and optimized for long-term benefits.

Pharmaceutical-
Grade

Rigorous
Testing

Expert
Providers

Regulatory
Compliance

4.8 stars out of 5

based on 154 reviews

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Text "99+ Percent Purity" in bold sans-serif font indicating high purity level.
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Evidence-Based, Clinically Guided Care

Sourced from FDA-approved USA manufacturers

Our peptide protocols utilize advanced, clinically validated peptides such as CJC-1295, BPC-157, and PT-141. Each treatment plan is grounded in rigorous clinical data and tailored for safe, effective results—helping you optimize your body’s natural repair, recovery, and performance pathways.

We continuously update our protocols to meet the latest scientific and regulatory standards, ensuring patients receive the safest and most effective therapies.

Stay on the cutting edge of health

Get the latest advice from our longevity experts and early access to updated mixing guides, clinical insights, and exclusive access.

Extension Health Founder & Chief Medical Officer

Regenerative & Longevity Medicine Specialist

Meet Dr. Jonathann Kuo, MD

Extension Health Founder & Chief Medical Officer

Regenerative & Longevity Medicine Specialist

For over 15 years, Dr. Kuo has harnessed cutting-edge clinical advancements to help 50,000+ patients improve their quality of life.

He built Extension Health to bring longevity breakthroughs to the forefront of modern medicine, giving patients the chance to take control of their health and longevity through diagnostics, personalized protocols, and cellular-optimizing therapies.

Medical Director

Meet Dr. James Salway, MD

Medical Director

Dr. James Salway is a highly accomplished, board-certified Emergency Medicine physician and public health system administrator with a diverse skill set spanning regenerative medicine, clinical operations, quality improvement, and telehealth.

With significant academic contributions, Dr. Salway holds faculty positions at Weill Cornell Medical College and has co-authored numerous peer-reviewed articles on health security, COVID-19 response, and patient care innovations.

Common questions

Yes, peptides are generally well-tolerated and safe when prescribed and administered under medical supervision. Our program uses clinically-tested, pharmaceutical-grade peptides and protocols tailored to your specific health needs and goals.

Currently, peptide therapy is not covered by most insurance plans, and our program is out of pocket only.

Peptide therapy cost may vary by peptide type and dosage.

A peptide protocol is a structured, personalized dosing plan for using specific peptides over a designated period. This plan includes precise information on the dose, frequency, and duration for each peptide, tailored to your unique health goals.

While many peptides are self-administered injections, some peptides are available as nasal sprays and oral tablets. Our clinical team will discuss administration mechanisms during your consultation.

We offer next-day shipping to ensure your peptides arrive promptly. Orders can be shipped Monday through Thursday. (Tri-state area: $40, Out of state: $60)

Several peptides have been shown to reduce sleep interruptions and promote better sleep wake cycles (circadian rhythm). During your longevity consultation, a member of our clinical team will review your sleep concerns and goals, before exploring some peptide for sleep options, including a Pinealon spray.

Various studies have shown that peptides like GLP-1 peptides for weight loss and anti-inflammation peptides may help promote anti-aging benefits. For example, the GLP-1 semaglutide has been shown to reduce up to 15 % body weight among some patients. A reduction in body weight may help reverse pre-diabetic risk and cardiovascular risks.

Your peptide therapy candidacy is determined after a clinician reviews your health history and goals during your longevity consultation. Typically, a peptide candidate is an adult who is relatively healthy, but may be experience ongoing wellness concerns, like inflammation, fatigue, weight gain, insomnia, low libido, and difficulty focusing.