A physician-reviewed guide to the peptides most often discussed in regenerative and longevity medicine, what they are and what the current research says about them.
Peptides that support the body's natural growth hormone signalling and tissue repair

A GHRH analogue that supports the body's natural growth hormone rhythm, discussed for recovery and body composition.

A gentle growth hormone secretagogue commonly paired with CJC-1295 in physician-supervised protocols.

A GHRH analogue best documented for reducing excess abdominal fat under medical supervision.

An oral secretagogue studied for growth hormone, IGF-1, sleep quality and lean body mass.

A regenerative peptide studied for tendon, ligament, muscle and gut healing.

A tissue-repair peptide studied for wound healing and soft tissue recovery.

A copper-binding tripeptide studied for skin remodelling and tissue maintenance.

The copper-bound form of GHK, used for collagen support, skin firmness and hair health.
Peptides studied for brain health, memory, mood and nervous system support

Neurotrophic peptides used clinically in several countries for stroke and brain injury recovery.

A cerebroactive peptide complex discussed for neuroprotective and neurotrophic support.

An experimental peptide explored for synapse formation and cognitive function.

A peptide-derived nootropic studied for memory, learning and neuroprotection.

Two peptides studied for calm, focus, memory and recovery after neurological injury.

A short peptide explored for mood regulation and neurogenesis.

Delta sleep-inducing peptide, studied for sleep quality and stress response.

A magnolia-derived compound studied for calm, GABA activity and sleep support.
Peptides researched for metabolism, fat reduction and cellular energy

A growth hormone fragment studied for fat breakdown without blood sugar effects.

A small molecule that blocks the NNMT enzyme, studied for metabolic health and body composition.

A mitochondrial peptide studied for energy balance, insulin sensitivity and exercise capacity.

An experimental compound exploring exercise-like effects on cellular energy.

An AMPK activator studied for metabolic and cardiovascular support.

A compound researched for weight management through appetite regulation.

An NAD+ precursor studied for mitochondrial function and metabolic resilience.

A selective androgen receptor modulator studied for preserving lean muscle mass.
Peptides investigated for immune balance and inflammatory response

An anti-inflammatory tripeptide studied for gut and skin inflammation.

A natural antimicrobial peptide studied for infection defence and wound healing.

A neuropeptide researched for immune regulation, blood flow and circadian rhythm.

An endogenous opioid peptide studied for pain modulation and immune regulation.

A peptide studied for nerve repair and neuropathic pain in diabetes-related nerve damage.
Peptides researched for cellular ageing and mitochondrial function

A synthetic epithalamin studied for telomerase activity and circadian regulation.

An experimental peptide designed to target senescent cells in healthy ageing.

Elamipretide, a mitochondria-targeted peptide studied for cellular energy production.

A peptide studied in laboratory research for its interaction with certain cancer cell membranes.
Peptides discussed in aesthetic, hormonal and sexual wellness contexts

An alpha-MSH analogue for skin tanning, used under medical supervision.

Bremelanotide, a peptide studied for sexual dysfunction and desire.

A bonding hormone peptide researched for mood, connection and stress resilience.

A peptide central to reproductive hormone regulation, studied for fertility and hormonal balance.
Every peptide protocol at MRC begins with a medical consultation, appropriate testing and physician supervision. Treatment plans are personalised to your health profile and are designed to complement your overall care.
Speak with our medical team about your health goals. We will help you understand which options are supported by evidence and appropriate for your situation.
This information, including but not limited to texts, images, graphics, labels, ingredients, indications, potential benefits, and other materials contained on this website are for informational purposes only. No part of this website is intended to be a substitute for professional medical advice, treatment, or diagnosis. Always seek the advice of your physician or other professional healthcare provider, particularly before starting a new regimen for the first time.