Treatments
Peptide Therapy
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:
- + Cognitive function and neuroprotection
- + Metabolic health and weight management
- + Sexual wellness and hormonal balance
- + Enhanced physical performance and endurance
- + Tissue repair and musculoskeletal recovery
Peptides Our Patients Love
Fast ACting
BPC-157
Repairs + protects tissue at the cellular level
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- + Accelerates injury and joint recovery
- + Enhances gut, brain, and nerve function
Most advanced
Elite Peptide Stacks
Optimizes recovery, cognitive function, energy, + performance
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- + Designed to nourish the brain over time
- + Helps you bounce back faster
Most Popular
Semaglutide
Targets hunger and metabolism at the hormonal Level
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- + Up to 15% body weight reduction on average
- + Curbs cravings and helps you stay fuller longer
Get $250 credit when booking
Patient Testimonials
4.8 Stars out of 5
Based on 154 Reviews
About Extension Health
Extension Health is NYC’s—and quite possibly the world’s—most premier medical center offering the most advanced therapeutics and personalized longevity care available today.
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
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.
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.
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.
4.8 Stars out of 5
Based on 99 Reviews
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.
11-20 years experience
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.
Peptide Therapy FAQs
Click the drop down for details on each question.
Is Peptide Therapy safe?
Yes, Peptide Therapy is generally safe when administered by a licensed healthcare professional. Peptides are naturally occurring in the body, and the therapy simply supports and enhances natural processes. Always consult with your provider to ensure it’s suitable for you.
Are there any side effects of Peptide Therapy?
Most people tolerate Peptide Therapy well. However, some may experience mild side effects, such as:
—Irritation at the injection site
—Mild headaches
—Nausea or dizziness
These side effects are generally temporary and go away shortly after treatment.
How is Peptide Therapy administered?
Peptide Therapy can be administered in several ways, depending on the type of peptide and your preference:
—Injection (most common method, subcutaneous)
—Nasal Spray
—Oral Tablets
Topical Cream
Your healthcare provider will recommend the best method based on your health goals and the specific peptides used.
How long before I see results from Peptide Therapy?
The time it takes to see results depends on your specific goals and the peptides used. Some people notice improvements in energy or recovery within a few days to a week. For more long-term goals like muscle growth or fat loss, it may take a few weeks to a couple of months to see significant changes.
Is Peptide Therapy covered by insurance?
No, Peptide Therapy is a cash-pay service and is not typically covered by insurance. However, many patients find the investment worthwhile for the benefits it provides.
Who should not receive Peptide Therapy?
Peptide Therapy may not be suitable for individuals with certain medical conditions, including:
—Pregnant or breastfeeding women
—Severe allergies to peptides
—Uncontrolled diabetes or certain hormone imbalances
It’s important to consult with your healthcare provider to determine if Peptide Therapy is right for you based on your health history.
Is Peptide Therapy FDA-approved?
While individual peptides used in therapy may be FDA-approved for specific medical purposes, Peptide Therapy itself is not FDA-approved for general wellness or anti-aging use. The therapy is often used to support specific health goals, and it is important to consult with your healthcare provider for guidance.
We also recommend
Your health journey doesn’t stop here — it’s all connected. That’s why we recommend pairing this service with Comprehensive Diagnostics and Blood & Lab Work.
Comprehensive Diagnostics
Assess body composition, metabolism & aging biomarkers
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Learn moreLearn more
Longevity Consultation
Personalized longevity guidance & treatment recommendations.
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Learn moreLearn more
Which path is best for you?
Book a free discovery call with a non-clinical team member who will help you get started.