Advisory Consultation · London

Longevity
& Metabolic
Protocol

Science-Led  ·  Biology-First  ·  Longitudinal

A physician-designed advisory programme exploring the most researched peptide compounds in cellular ageing, biological age modulation, and metabolic function. Led personally by Dr. Ethan Hausman-Marquis — PhD (Karolinska Institute), nearly 20 years of specialist peptide research experience. Every programme begins with your bloodwork.

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Protocol Overview

Duration

60 mins

Discomfort

1 / 10

Sessions

OngoingMonthly reviews

Recovery

N/A

Price

From £600/monthConsultation from £150

All compounds sourced exclusively from GMP-certified, EMA-regulated and FDA-registered compounding pharmacies. Certificate of analysis on every order. Not licensed medicines under the Human Medicines Regulations 2012.

Epithalon, MOTS-c, NAD+, CJC-1295, Ipamorelin, GHK-Cu and all compounds discussed are not licensed medicines under the Human Medicines Regulations 2012. The Catalyst Clinic provides medical advisory consultations only. Nothing on this page constitutes a treatment recommendation or medical advice.
GMP-Certified Pharmacies EMA-Regulated & FDA-Registered Certificate of Analysis GMC-Registered Physicians Mandatory Diagnostics PhD-Level Oversight

The Journey

Your 6-Step Protocol

Diagnostics before everything. A physician who reads your results personally. Clinical oversight that continues for as long as you are with us.

Step 01

Longevity Biomarker Panel

Comprehensive diagnostics specifically selected for biological age and metabolic health indicators — before any protocol discussion.

  • Complete Blood Count
  • IGF-1 and growth hormone markers
  • Inflammatory and oxidative stress panel
  • Metabolic and hormonal baseline
  • Biological age assessment indicators

Step 02

Compound Selection

Dr. Ethan reviews your results personally — not via algorithm — and identifies which longevity-associated compounds are relevant to your biological profile.

  • Telomere-associated compound research
  • Growth hormone axis assessment
  • Mitochondrial health markers
  • Cellular repair pathway indicators
  • Contraindication and safety screening

Step 03

Bespoke Protocol Design

A fully personalised advisory protocol. Compounds may include Epithalon, CJC-1295, Ipamorelin, GHK-Cu, MOTS-c, Humanin, and NAD+.

  • Personalised compound selection
  • Dosage and cycling rationale
  • Delivery method guidance
  • Supplementation integration
  • Full protocol documentation

Step 04

Induction & Education

A structured induction ensures you understand every element — the science, the compounds, the expected timeline, and the monitoring process.

  • Full protocol walkthrough
  • Compound mechanism education
  • Administration guidance
  • Lifestyle integration advice
  • Open Q&A with Dr. Ethan

Step 05

Strategic Cycling

Protocols designed with cyclicity to prevent receptor desensitisation, maintain hormonal homeostasis, and optimise long-term biological outcomes.

  • Prevents desensitisation
  • Maintains endocrine balance
  • Supports natural feedback mechanisms
  • Optimises long-term outcomes
  • Adjusted as biology evolves

Step 06

Ongoing Monitoring

Monthly reviews and repeat bloodwork every four to five months track biomarker progression. Every adjustment data-driven, documented, personally made by Dr. Ethan.

  • Monthly progress reviews
  • Repeat diagnostics every 4-5 months
  • Protocol refinement based on data
  • Longitudinal health tracking
  • Full clinical documentation

Compound Research

Compounds Under Investigation

Compounds discussed within the Longevity & Metabolic Protocol may include the following, subject to your individual diagnostic profile.

Epithalon

Studied for telomerase activation and circadian rhythm regulation in preclinical models.

CJC-1295 & Ipamorelin

Researched for pulsatile growth hormone secretion and IGF-1 modulation. Growth hormone secretagogue class.

GHK-Cu

Explored for collagen synthesis, gene expression modulation, and tissue repair in preclinical models.

MOTS-c

A mitochondrial-derived peptide studied in longevity and metabolic research models.

Humanin

Researched for neuroprotection and mitochondrial function in ageing models.

NAD+

Explored for cellular energy metabolism, sirtuin activation, and DNA repair pathways.

All compounds are subjects of ongoing scientific research. None are licensed medicines under the Human Medicines Regulations 2012. No claims of established human efficacy are made or implied.

Why The Catalyst Clinic

London's Most Clinically Rigorous Protocol

The only longevity protocol in London personally designed and overseen by a physician with a PhD in Cell and Genomic Biology and nearly 20 years of peptide-specific research experience.

01

Mandatory Diagnostics

Comprehensive bloodwork before any protocol discussion. A standard not universally applied across London clinics.

02

PhD-Level Oversight

Dr. Ethan reviews every result himself. PhD in Cell & Genomic Biology, Karolinska Institute. No other London clinic has this.

03

Pharmaceutical Grade

GMP-certified, EMA-regulated, FDA-registered pharmacies only. Certificate of analysis on every order.

04

Published Author

Author of two published works in peptide science. No other peptide clinic physician in London has published in this field.

05

Injectable Pen Delivery

First clinic in London to offer peptides via injectable pen. Accurate, consistent dosing without traditional syringe complexity.

06

Monthly Reviews

Ongoing physician oversight throughout. Repeat bloodwork every four to five months. Never set and forget.

What The Protocol Covers

Physician-Led.
Data-Driven.

The Longevity & Metabolic Protocol explores peptide compounds studied in the scientific literature for their potential roles in cellular repair, biological age modulation, growth hormone optimisation, telomere maintenance, and mitochondrial function.

The Catalyst Clinic operates within a fully regulated private medical framework. All clinical programmes are physician-led, diagnostics-based, and subject to ongoing medical oversight by a US and GMC-registered physicians.

"Every decision is documented, explained, and traceable. A patient who understands their programme is a safer, better-served patient."

Dr. Ethan Hausman-Marquis

  • PhD, Cell & Genomic Biology — Karolinska Institute, Stockholm
  • GMC-Registered Physicians
  • US & European Board-Certified, Regenerative Medicine
  • Member, American Academy of Anti-Aging Medicine (A4M)
  • Author — Peptide-Based Cancer Therapies
  • Author — Exploring the World of Peptides
  • Nearly 20 years specialist peptide research experience

Common Questions

Frequently Asked

A physician-led advisory programme exploring peptide compounds studied for their potential roles in cellular ageing, biological age modulation, and metabolic function. Begins with comprehensive diagnostics and is personally designed by Dr. Ethan Hausman-Marquis around your individual biomarker profile.
Compounds discussed may include Epithalon, CJC-1295, Ipamorelin, GHK-Cu, MOTS-c, Humanin, and NAD+ depending on your diagnostic results and goals. No fixed stack is applied — every protocol is built around your bloodwork.
It is the only longevity protocol in London personally designed and overseen by a physician with a PhD in Cell and Genomic Biology (Karolinska Institute) and nearly 20 years of peptide-specific research experience. Mandatory diagnostics, pharmaceutical-grade compounds, and monthly physician reviews are non-negotiable standards applied to every patient.
Yes. The Catalyst Clinic operates in full compliance with MHRA, ASA, and CQC guidance. All compounds discussed are not licensed medicines under the Human Medicines Regulations 2012. All consultations take place within a regulated private medical framework under GMC-registered physician oversight.
Programmes start from £600 per month, including mandatory diagnostics, a personally designed protocol, pharmaceutical-grade compounds, and ongoing monthly reviews. Initial consultation from £150.

Begin Your Programme

Every programme
begins with
your data.

Ready to explore the current science around longevity peptides within a fully physician-led framework? Begin with a discovery consultation — in person at our Kensington clinic or remotely, anywhere in the world.

Every Programme Includes

  • Mandatory pre-consultation bloodwork
  • Personal review by Dr. Ethan
  • Pharmaceutical-grade compounds only
  • Bespoke protocol — no templates
  • Injectable pen delivery
  • Monthly physician reviews
  • Repeat bloodwork every 4-5 months

96 Kensington High Street, London W8 4SG
Remote consultations available worldwide

Regulatory Notice

The peptide compounds discussed within this protocol are not licensed medicines under the Human Medicines Regulations 2012 and are not approved by the MHRA for human use in a wellness, longevity, or therapeutic context. The Catalyst Clinic provides medical advisory consultations only. Nothing on this page constitutes a treatment recommendation, prescribing guide, or medical advice. All compounds are sourced exclusively from GMP-certified, EMA-regulated, and FDA-registered compounding pharmacies.