Welcome to EXTENSION Health

Our medical-grade peptides, formulated for human use, are sourced from an FDA-approved API/peptide manufacturer and produced in a GMP-certified facility adhering to cGMP standards. Each peptide undergoes rigorous testing, including mass spectral analysis and RP-HPLC, ensuring exceptional purity (99.99%) and reliability. Our experienced providers stay at the forefront of peptide research and clinical best practices, continuously updating protocols to deliver the most advanced and effective treatments.

Available exclusively to our existing patients. If you are not an existing patient, but are interested in peptide therapy, book a consultation here.

IMPORTANT: Peptide Shipping + Reconstitution Updates (5/20/25)

We’re excited to share some important updates to our peptide order fulfillment process - designed to improve your experience, enhance peptide efficacy, and offer better options for how and when you receive your peptides. 

Shipping is Now Faster, And No More Reconstitution!

 

Peptides are once again shipped directly from our West Village office, already reconstituted in liquid form, so there’s no need to mix them yourself.

Processing time: Up to 3 business days (most orders ship same or next business day unless there’s a supply chain delay)

Shipping costs: $60 within the Tri-State Area,$80 for all other U.S. states

No more required reconstitution: your peptides arrive ready to use in liquid form. 

Prefer powder form? Just request it in the Order Special Instructions box at checkout

Pick Up Scheduling Updats

You can now schedule your peptide pick-up immediately after placing your order - no need to wait for a "Ready for Pick-Up" notification.

Pick-up appointments are required, available on Monday, Wednesday, & Friday,  9:30am-4:45pm

Must be scheduled at least 24 hours in advance, only after you have placed an order

Click here to Schedule Your Peptide Pick-Up

 

Peptides ordered for pick up will be prepared for you in liquid form on the morning of your scheduled peptide pick-up, unless otherwise noted.

As always, thank you for being part of the EXTENSION Health community as we improve our services. We’re here to help if you have questions or need support. 

For more details, check out our FAQ Page.

Need additional support with your peptides?
Book a complimentary 15-minute session with a member of our Patient Success Team to ask questions and receive guidance following your consultation with a provider. Sessions are held virtually via Google Meet unless you request an in-person appointment on the scheduling form. If you would like to come in person, we can also walk you through the injection process, and a clinical team member can assist with your first injection if needed.

Schedule A Peptide Support Session

Please note: This is a support session only. Clinical advice, including peptide recommendations or dosing changes, must be provided by a licensed provider. To book a consultation with a doctor, click here:  Longevity Consultation

Weight Loss (GLP1s) & Metabolic Health

Ideal for those aiming to improve metabolism, burn fat, and achieve sustainable weight loss. These peptides enhance insulin sensitivity, suppress appetite, and optimize metabolic processes.

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Hormone Support & Athleticism

Designed for individuals seeking to naturally increase growth hormone (GH) levels. These peptides support muscle growth, fat reduction, immune function, and tissue repair, enhancing overall metabolic and hormonal balance.

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Inflammation, Repair, & Recovery

Essential for cellular repair and inflammation reduction, these peptides accelerate healing, alleviate chronic pain, and support recovery from injuries. They are also valuable for anti-aging treatments, promoting skin regeneration and overall tissue health.

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Energy & Mitochondrial Health

Targeted for those seeking to improve energy levels and cellular vitality, these peptides enhance mitochondrial function, reduce fatigue, increase endurance, and support overall wellness. They are excellent for optimizing physical and mental performance.

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Sex, Sleep and Mood

Optimized for cognitive function and emotional well-being, these peptides support mood enhancement, better sleep quality, improved libido, and overall mental clarity. Perfect for managing stress, boosting energy, and achieving a balanced state of mind.

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Immune Boost

Perfect for individuals looking to strengthen their immune system, combat chronic inflammation, and promote overall resilience. These peptides support immune cell function, reduce inflammation, and enhance the body’s natural defense mechanisms, making them ideal for addressing autoimmune conditions, chronic infections, and recovery from illnesses.

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Nasal Sprays

Our nasal sprays offer a precise, painless, and needle-free method for delivering vitamins and peptides through the nasal mucosa. This advanced delivery system provides high bioavailability, bypassing the blood-brain barrier and first-pass metabolism for faster absorption and enhanced effectiveness. Ideal for patients seeking non-invasive options, nasal sprays ensure controlled dosing, rapid results, and reduced side effects—making them an efficient and safe alternative to injections.

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Superhuman Peptide Stacks

Our Superhuman Peptide Stacks simplify advanced peptide therapy by combining multiple peptides into a single, convenient vial. These stacks are enhanced with PEGylation to extend peptide stability and Exosome Encapsulation to ensure precise delivery, optimizing absorption and effectiveness. This innovation eliminates complexity while maintaining the full benefits of layered multi-peptide therapy, making it an ideal choice for those seeking convenience without compromising results. Learn More

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Dr Kuo Recommended Protocols

The Dr. Kuo Recommended Protocols are meticulously designed, multi-peptide plans tailored to deliver maximum synergy and results. These protocols bundle separate peptide vials and provide detailed dosing and cycle recommendations to address specific health goals, such as longevity, sleep, and recovery. Dr. Kuo’s science-backed methodology ensures that each peptide in the plan complements the others, creating a cohesive and strategic approach to therapy.