← BackManchester Peptides gold M logo

Peptide Pens

The complete peptide pen collection. Compare each listed strength and price, select a quantity, or open the product information for research context and related reports.

8 options

Pen · 80 mg

KLOW

KLOW is a catalogue name commonly used for a four-component research blend of GHK-Cu, BPC-157, TB-500 and KPV.

£90
Product information

KLOW is a catalogue name commonly used for a four-component research blend of GHK-Cu, BPC-157, TB-500 and KPV. It brings together materials investigated in skin and connective-tissue biology, cell migration and inflammatory signalling. Check the product label and batch documentation for the precise formulation of the supplied pen.

For research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 10 mg

MT2 · Melanotan II

Melanotan II (MT2) is a synthetic analogue of alpha-melanocyte-stimulating hormone (alpha-MSH), a signal involved in skin pigmentation.

£50
Product information

Melanotan II (MT2) is a synthetic analogue of alpha-melanocyte-stimulating hormone (alpha-MSH), a signal involved in skin pigmentation. It activates melanocortin receptors and is studied for its ability to stimulate melanin, the pigment responsible for skin colour and tanning. A small early human study observed increased pigmentation, but this does not establish long-term safety or validate this pen formulation. Reported effects include nausea, flushing and changes in moles or freckles. This entry identifies the labelled 10 mg pen format. For research purposes only; not an approved tanning treatment or a substitute for sun protection.

Melanotan II: early human pigmentation studyFor research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 100 mg

GHK-Cu

A naturally occurring copper-binding tripeptide researched in skin, extracellular-matrix and wound-repair biology.

£85
Product information

A naturally occurring copper-binding tripeptide researched in skin, extracellular-matrix and wound-repair biology. Studies explore collagen, elastin, tissue remodelling and hair-follicle pathways, with evidence varying by formulation and use.

Evidence and sources at a glance
Human evidence
Some topical and cosmetic studies exist, but formulation quality, scale and endpoints vary.
Regulatory context
Cosmetic ingredient use is not evidence that injectable GHK-Cu is an approved treatment.
Read the full evidence map
Related laboratory reports100 mg COA · #220567Reports describe the tested samples; batch identity must be matched separately.
PubMed: topical GHK evidence reviewRead the GHK-Cu research guide →For research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 10 mg + 10 mg

BPC-157 + TB-500

A catalogue combination of two distinct experimental materials discussed in preclinical tissue-repair research.

£80
Product information

A catalogue combination of two distinct experimental materials discussed in preclinical tissue-repair research. Studies consider cell migration, inflammatory signalling and wound-repair pathways, but the combined ‘Wolverine’ format is not an approved clinical formulation.

Evidence and sources at a glance
Human evidence
Robust, replicated controlled human evidence for BPC-157 is absent, and the marketed blend itself lacks an established clinical evidence base.
Regulatory context
The combined product is not an approved UK medicine and should not be described as a proven injury treatment.
Read the full evidence map
PubMed: BPC-157 translational research reviewRead the BPC-157 + TB-500 research guide →For research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 1,000 mg

NAD+

NAD+ (nicotinamide adenine dinucleotide) is a cellular coenzyme involved in oxidation–reduction reactions and energy metabolism.

£90
Product information

NAD+ (nicotinamide adenine dinucleotide) is a cellular coenzyme involved in oxidation–reduction reactions and energy metabolism. It is not a peptide. The listed strength and presentation identify the catalogue format, not proven bioavailability or an established anti-ageing effect.

Related laboratory reports1,000 mg COA · #220603Reports describe the tested samples; batch identity must be matched separately.
PubChem: Nicotinamide adenine dinucleotideFor research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 40 mg

MOTS-C

A mitochondria-derived peptide studied as a signal connecting cellular stress, energy use and metabolic adaptation.

£75
Product information

A mitochondria-derived peptide studied as a signal connecting cellular stress, energy use and metabolic adaptation. Research explores mitochondrial function, insulin sensitivity and exercise-response pathways, although most intervention evidence remains preclinical.

Evidence and sources at a glance
Human evidence
Human work includes observational biology and early experimental research, not an established therapeutic evidence base.
Regulatory context
MOTS-C is not an approved medicine for metabolism, exercise performance or ageing.
Read the full evidence map
PubMed: MOTS-c research reviewRead the MOTS-C research guide →For research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 40 mg

Retatrutide

An investigational triple receptor agonist designed to act on GLP-1, GIP and glucagon pathways.

£140
Product information

An investigational triple receptor agonist designed to act on GLP-1, GIP and glucagon pathways. Researchers are studying how this combined signalling may affect appetite, glucose regulation, energy balance and body composition. It is not currently an approved UK medicine.

Evidence and sources at a glance
Human evidence
Randomised phase 2 evidence and reported phase 3 results are available. Check whether a particular result is a peer-reviewed publication or a sponsor announcement, and inspect its population and follow-up.
Regulatory context
Retatrutide is not currently an authorised UK medicine. Investigational status should never be presented as approval.
Read the full evidence map
Related laboratory reports40 mg COA · #195385Reports describe the tested samples; batch identity must be matched separately.
Lilly: current retatrutide research programmeRead the Retatrutide research guide →For research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details

Pen · 40 mg

Tirzepatide

A dual GIP and GLP-1 receptor agonist associated with appetite, insulin and glucose-regulation pathways.

£140
Product information

A dual GIP and GLP-1 receptor agonist associated with appetite, insulin and glucose-regulation pathways. Authorised prescription versions have established clinical uses, but unlicensed research material is not equivalent to an approved medicine.

Evidence and sources at a glance
Human evidence
Multiple phase 3 trials and real-world use provide a much larger evidence base than is available for most catalogue peptides.
Regulatory context
Authorised tirzepatide medicines have approved indications and controlled supply routes; research material is not equivalent.
Read the full evidence map
NHS: tirzepatideRead the Tirzepatide research guide →For research and reference purposes only. Listing a product does not establish suitability for medical use.
View full details
Research references (7)

Understanding research pen formats

A research pen is a supplied presentation format. The pen name and labelled milligram amount identify the catalogue listing, while composition, concentration and analytical status depend on the specific formulation and batch documentation.

Pen format does not make unlicensed material equivalent to an authorised medicine or medical device. Check the complete label, ingredient information and any available batch-specific laboratory report before drawing conclusions about identity or content.

Common research questions

Does a pen format confirm a product is approved?

No. A presentation format does not establish regulatory approval, quality or equivalence to a prescription medicine.

Where can I check the research background?

The What Each Peptide Does guide explains the research idea and evidence level for key catalogue names, with links to external sources.