Precision Peptide Therapy clinic in London
for Age‑Less Living
Doctor‑led protocols, advanced diagnostics, and concierge follow‑up. Designed for performance, recovery, and healthy lifespan extension.
As Featured In:
Peptides in two minutes
A quick primer on mechanisms (tissue repair, mitochondrial support, inflammation control) and how we tailor dosing, delivery, and cycling to your biomarkers. You've likely heard about this, but maybe not gotten a clear explanation. With a PhD in Cell and Molecular Biology, Dr. Ethan Hausman-Marquis created this short video to explain how peptides really work. Check it out!
Discover the world of peptide therapy. The Catalyst Clinic in London and New York specializes in peptides and bioregulating peptides (like BPC-157, Epithalon and CJC-1295) configuration and optimization. Each of our therapies are unique to each patient. We go the extra mile by requiring blood work and other diagnostic tests before each treatment. We then may alter the treatment plan and’or protocol monthly based off progress.
WHY CHOOSE OUR PEPTIDE CLINIC AT
THE CATALYST CLINIC IN LONDON?
Experienced Professionals
Dr Ethan has over 15 years of extensive experience in peptide therapy in his US clinics in New York and Los Angeles. He is also the author of two books on peptides: Exploring the World of Peptides: From Basics to Breakthroughs and Peptide-Based Cancer Therapies: A New Frontier in Precision Medicine. He also hosts the podcast The Science of Age-less Living.
Personalized Approach
We tailor treatment plans to your individual needs and goals, ensuring truly customised care.
Commonsense Protocols
It is advisable to be cautious if a clinic does not perform blood work. For your safety, ensure that any clinic you choose conducts thorough blood tests prior to initiating peptide therapy.
All peptide treatments require blood work every 2–4 months after commencing. This mandatory service is included in the monthly fee.
Comprehensive Consultations
We conduct thorough consultations to assess your health and recommend the most suitable peptides for you.
Your treatment plan includes your medical history, bloodwork analysis, peptide protocol, and supplement recommendations designed to augment results—truly a bespoke service unmatched globally.
Safe and Effective Treatments
We prioritise your safety and well-being, utilising only high-quality, US prescription-based peptides (produced in Utah and South Carolina) and formulated with cutting-edge science in FDA-registered, cGMP-compliant labs.
Convenient Locations
The Catalyst Clinics are conveniently located in London, New York, Amsterdam, and soon Zürich—each easily accessible by public transport or car.
WHY BLOOD DIAGNOSTICS ARE ESSENTIAL
BEFORE STARTING PEPTIDE THERAPY
Critical First Step
Blood diagnostics are essential before starting peptide therapy, ensuring both safety and effectiveness. Skipping this step puts patients at unnecessary risk, as peptide therapy affects highly individualised hormonal and biochemical systems.
Personalized Treatment
Comprehensive bloodwork provides a baseline, helping your provider decide if therapy is appropriate and how to tailor your protocol. Without it, peptides could disrupt balance and cause adverse effects, even if hormones already sit in the optimal range.
Maximize Benefits, Minimize Risks
Starting peptide therapy without bloodwork is a gamble. With thorough diagnostics, your provider can deliver safe, customised treatment that improves your chances of positive outcomes. Always choose a clinic that makes bloodwork foundational.
Programs Tailored to Your Biology
Each therapy is uniquely configured and optimized for your specific needs, with monthly protocol adjustments based on progress and biomarkers.
Performance & Recovery
Tissue repair and resilience protocols leveraging BPC-157/TB-500 variants, sleep optimization, and micro-dosed NAD+ support.
- • Advanced tissue repair protocols
- • Sleep optimization therapy
- • Recovery enhancement
- • Athletic performance boost
Cognitive & Mood
Focus and neuroplasticity support with clinic-guided nootropic peptides, neuroinflammation control, and circadian alignment.
- • Enhanced mental clarity
- • Mood stabilization
- • Neuroplasticity support
- • Stress resilience
Longevity & Metabolic
Body composition, skin health, and metabolic flexibility using phased cycling, nutrition, and adjunct devices.
- • Body composition optimization
- • Skin health enhancement
- • Metabolic flexibility
- • Aesthetic improvements
Your Journey to Optimal Health
Our comprehensive approach ensures safe, effective, and personalized peptide therapy with complete transparency and ongoing support.
Blood & Diagnostic Testing
Comprehensive health assessment with included blood work
- • Complete Blood Count (CBC)
- • Comprehensive Metabolic Panel (CMP)
- • Hormone Panel including sex hormones
- • Additional vital biomarkers
- • Physical examination
Identifying the Right Peptide
Personalized peptide selection based on your unique profile
- • Goal-specific peptide matching
- • Health profile analysis
- • Biomarker-guided selection
- • Safety screening
Treatment Plan & Dosage
Customized protocol with transparent dosing
- • Personalized dosage calculation
- • Administration method selection
- • Comprehensive treatment plan
- • Complete transparency — no 'secret sauce'
Induction & Reviews
Ongoing support with monthly assessments
- • Detailed induction session
- • Monthly progress reviews
- • Protocol adjustments
- • Quarterly blood work
Cyclicity
Strategic cycling to maintain effectiveness
- • Prevents desensitization
- • Maintains natural homeostasis
- • Avoids endocrine complications
- • Optimizes long-term results
Transparency
Complete openness in our patient relationship
- • Full medical history discussion
- • Medication interaction screening
- • Open communication channels
- • Educational approach
How Peptide Therapy Fits Into Longevity Medicine
A quick primer on mechanisms (tissue repair, mitochondrial support, inflammation control) and how we tailor dosing, delivery, and cycling to your biomarkers.
Dr. Ethan Hausman-Marquis
PhD in Cell and Genomic Biology
With extensive expertise in cellular mechanisms and peptide biochemistry, Dr. Ethan provides clear, science-based explanations of how peptides really work in the body.
Doctor-Led
Expert guidance
Personalized
Tailored protocols
TOP PEPTIDES
Benefits of Peptide Therapy at the catalyst clinic
biohacking anti-aging results with Targeted Treatments
Transparency is our raison d'être. At The Catalyst Clinic, we offer advisory services on the research use of peptides; we're committed to open and honest dialog – nothing more, nothing less. Second, the ability to tweak your treatment plan. Maybe you need more BPC-157 and less GHK-Cu. These therapies are truly customized to you! And YOU are the center of that treatment, not the peptide!
Dr. Ethan is at the forefront of longevity therapies – with 15 actual years in peptides at his Los Angeles and New York City clinics and now abroad. He is an active member and speaker for the International Peptide Society, the American Board of Regenerative Medicine, the American Academy of Anti-Aging Medicine, and the International Longevity Alliance.
As a pioneer in peptide chemistry he has written two books on peptide therapy, Peptide-Based Cancer Therapies: A New Frontier in Precision Medicine and Exploring the World of Peptides: From Basics to Breakthroughs. He also hosts a podcast, The Science of Age-less Living.
And it is all about the science! With a PhD in Cell and Genomic Biology and he knows and understands the metabolism, mechanisms and modes of action.
No clinical practitioner has the lab bench background to really understand how these little marvels work.
Benefits of Peptide Therapy at The Catalyst Clinic
Biohacking anti-ageing results with targeted treatments.
Transparency is our superpower. We offer advisory services on the research use of peptides, with honest, open communication—nothing more, nothing less.
Your plan is customised to you. Need more BPC-157 and less GHK-Cu? Adjustments are simple, with you at the centre—not the peptide.
What Are Peptides?
Peptides are short chains of amino acids acting as signalling molecules, influencing hormone production, cell regeneration, immune function, and cognitive health.
For more, listen to Dr. Ethan’s podcast The Science of Age-less Living.
What Is Peptide Therapy?
Peptide therapy uses targeted peptides to address specific health and wellness concerns. These molecules orchestrate biological processes from metabolism to tissue regeneration.
Our Approach
Your safety is our priority. We begin with detailed bloodwork and diagnostic analysis to ensure suitability. Dr. Ethan creates a fully personalised plan, adapted to your unique health profile and goals.
Innovative Technology
We are the first clinic to provide peptides in injectable pens—accurate, simple, and comfortable dosing without the hassle of traditional syringes.
- Accurate dosing every time
- Minimal preparation and equipment
- Faster, simpler, and more comfortable injection process
Unlike pre-mixed syringes, our approach ensures clarity, flexibility, and precise customisation of your protocol.
Why Blood Diagnostics Matter
Bloodwork is essential before peptide therapy. It provides a baseline, uncovers imbalances, and ensures treatment is both safe and effective.
Skipping diagnostics is a gamble. With comprehensive testing, we personalise your plan for maximum benefit and minimum risk.
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Disclaimers
UK/EU DISclaimer
Applicable to the UK clinics: All products listed and provided through The Catalyst Clinic in London are intended for research purposes only. We do not promote the personal use of these products. Products provided by The Catalyst Clinic London are not intended for use in food products or as any type of drug. Our products are not intended to treat, prevent, mitigate or cure any disease or medical condition and are for research purposes only.
Disclaimer: GLP-1 Peptide Medications
Due to legal, regulatory, and dispensing criteria, The Catalyst Clinic does not provide any GLP-1 peptide medications, including but not limited to Semaglutide (Ozempic), Tirzepatide (Mounjaro), and Retatrutide, as part of any protocols or treatment options.
If you are interested in or require information about these medications, we strongly advise you to consult your General Practitioner (GP) or a relevant medical specialist. They are best equipped to offer guidance, assess suitability, and prescribe these medications if appropriate for your health needs.
Ready to Start Your Journey?
Schedule your consultation and discover how peptide therapy can optimize your health.
