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Peptides: weekly, daily, for life.
The editorial newsletter, reference library, catalogue, and community — all in one place. Each week we cover GLP-1s, metabolic peptides, longevity science, and next-generation wellness research, then highlight the vials worth knowing about, vetted by the people using them. Run by peptide enthusiasts. Made for everyone.

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The Peptides Weekly community.

A quiet, considered space for people exploring GLP-1 and adjacent metabolic peptide research. Share notes, ask questions, and read alongside others further down the path. Leave your email for an invite when the network opens.

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What is Peptides Weekly?

Peptides Weekly is the editorial newsletter and reference library for the rapidly evolving world of research-grade peptides. We cover GLP-1s, metabolic peptides, longevity science, recovery, skin and cognition — and we pair every brief with a curated catalogue so readers can act on what they’ve just read. We write plainly, source carefully, and assume our readers are intelligent adults.

This is where the editorial lives, and where the catalogue sits behind it, supplied through Archangel Labs. Every peptide is included because there is a meaningful body of peer-reviewed research behind it, not because it is trending. Where the science is still emerging (Retatrutide, MOTS-C, SS-31), we say so. Nothing here is medical advice. Everything here is for laboratory research use only.

🌍 Worldwide community
Research use only
≥98% purity
Editorial, not promotional
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       How to order

  • Browse the catalogue below and pick what you need.
  • Click Order on Archangel Labs to reach the order form.
  • Pick a tier, or order individual peptides only.
  • Complete your details and pay by PayPal at Archangel Labs. Daily despatch.
A CURATED CATALOGUE

Less noise. More signal.

From metabolic and longevity to recovery, skin and cognition—every compound below is included because there is meaningful research behind it. Scroll on to browse the full catalogue.

How we source →
vial retatrutide v2

Retatrutide

vial tirzepatide v2

Tirzepatide

vial semaglutide v2

Semaglutide

vial bpc157 v2

BPC-157

vial ghkcu v2

GHK-Cu

vial nad v2

NAD+

Research use only. Fulfilment by Archangel Labs.

Why these peptides make the cut

COMMUNITY-BACKED

We prioritise compounds and source relationships that continue to earn trust from informed buyers over time.

Careful vetting

We rely on careful source-vendor vetting, peer feedback, and the accumulated judgement of an informed community.

High-conviction only

We focus on peptides we have tried, reviewed closely, or would be fully comfortable trying ourselves.

Weight & Metabolism

3 peptides • 10 vial options • GLP‑1 family
Chosen for quality, consistency, and reputation — priced fairly because our model stays lean.

Retatrutide

HIGH‑CONVICTION
A closely watched triple‑agonist in metabolic research.
A first‑in‑class triple receptor agonist targeting GLP‑1, GIP and glucagon pathways simultaneously.
5mg £3010mg £4515mg £6520mg £7930mg £9960mg £129
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Tirzepatide

Dual GLP‑1 / GIP research peptide.
Dual agonist with flexible vial sizes for metabolic research.
15mg £5530mg £7960mg £109
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Semaglutide

The benchmark GLP‑1 receptor agonist.
One of the most established peptides in metabolic research.
10mg £40
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PREFER A MONTHLY SUBSCRIPTION?

Choose your tier

Every paid tier ships Retatrutide 20mg monthly, plus access to the Peptides Weekly research circle, newsletter, and educational resources. Step up for broader support, added compounds, and a more complete monthly research tier.

See subscription options →
🪶

Feather

£59/mo

Retatrutide 20mg + community access. A measured starting point.

🪽

Wings

£89/mo

Retatrutide 20mg + NAD+ 500mg. The next step up.

✨

Halo

£139/mo

Retatrutide 20mg + GLOW 70mg. Higher support for recovery-focused research.

👑

Divine

£169/mo

Retatrutide 20mg + NAD+ + GLOW + priority benefits. Our most complete monthly research tier.

4-month minimum term. Renews monthly thereafter unless cancelled at least 30 days before the next billing date. Configure your tier on the order form at Archangel Labs.

The Stacks

GLOW & KLOW · our signature multi‑peptide blends

GLOW · 70mg

3‑IN‑1
A three‑peptide blend for recovery‑focused and skin‑support research.
A research blend combining BPC‑157, TB‑500 and GHK‑Cu in a single lyophilised vial. Designed for wound healing, dermal repair, collagen synthesis and angiogenesis.
70mg · £70 PRE‑ORDER
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KLOW · 80mg

4‑IN‑1
GLOW extended with KPV for added inflammation‑focused research.
Combines BPC‑157, TB‑500, GHK‑Cu and KPV into a single 80mg vial. Extends GLOW with an anti‑inflammatory tripeptide for tissue repair studies.
80mg · £89 PRE‑ORDER
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Skin, Hair & Pigmentation

Melanotan 2 · also see GHK‑Cu & GLOW

Melanotan 2

Also known as Milano Tan · MT‑II
The original synthetic α‑MSH analogue.
A synthetic analogue of alpha‑melanocyte‑stimulating hormone, studied for its effects on melanogenesis and the melanocortin system. One of the longer research histories of any peptide in the catalogue.
10mg · £21
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GHK‑Cu

The original skin‑and‑tissue copper peptide.
A copper‑binding tripeptide first isolated from human plasma in 1973. One of the most‑studied peptides in regenerative research, referenced in collagen synthesis, skin remodelling and anti‑ageing gene expression.
50mg · £19
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Longevity & Anti‑Ageing

3 peptides · mitochondrial & telomere research

MOTS‑C

Mitochondrial‑derived peptide for metabolic research.
A 16‑amino‑acid peptide encoded within mitochondrial DNA. Studied for insulin sensitivity, AMPK signalling and exercise adaptation.
10mg · £22
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Epithalon

Pineal‑derived tetrapeptide studied for telomere biology.
Synthetic tetrapeptide originally isolated from the pineal gland. Studied for telomerase activity, circadian regulation and ageing markers.
10mg · £18
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SS‑31 (Elamipretide)

Targeting the mitochondrial inner membrane.
Mitochondria‑targeting tetrapeptide that selectively associates with cardiolipin in the inner mitochondrial membrane and is studied for oxidative stress.
10mg · £40
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Mind & Focus

2 neuropeptides · mood, focus & stress

Selank

Russian-origin anxiolytic research peptide.
A synthetic heptapeptide developed from tuftsin and researched for modulation of the GABAergic system, anxiety pathways, stress response and immune‑neural crosstalk.
5mg · £18
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Semax

Selank's nootropic counterpart.
A heptapeptide fragment of ACTH developed alongside Selank. Studied for BDNF expression, neuroprotection and cognitive performance, often used in parallel with Selank.
5mg · £18
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Immune & Recovery

3 peptides · anti-inflammatory family

KPV

The small peptide with a big anti-inflammatory footprint.
A tripeptide (Lys‑Pro‑Val) derived from the C‑terminal of α‑MSH. Studied for potent anti‑inflammatory action, including TNF‑α modulation, across gut, dermal and autoimmune models.
10mg · £40
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Glutathione

The master antioxidant tripeptide.
A tripeptide of glutamate, cysteine and glycine. The body's most abundant endogenous antioxidant, researched for oxidative‑stress regulation, detoxification pathways and cellular redox balance.
600mg · £17
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NAD+

The coenzyme behind cellular energy.
Nicotinamide adenine dinucleotide plays a central role in cellular metabolism, DNA repair and sirtuin signalling, making it one of the fastest‑growing areas of longevity research.
500mg · £45
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Body Composition

2 peptides · growth hormone pathway

CJC-1295 + Ipamorelin

The classic pulsatile GH research pair.
A combination vial pairing CJC‑1295 without DAC (a short‑acting GHRH analogue) with Ipamorelin (a selective GHRP). Together they mimic the body's natural pulsatile GH release pattern and remain one of the best‑studied GH‑axis research combinations.
5mg + 5mg · £39
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Tesamorelin

GHRH analogue with the strongest clinical record.
A synthetic growth‑hormone‑releasing hormone analogue backed by extensive peer‑reviewed literature. Studied widely in models of visceral adiposity, lipid metabolism and cognitive function.
10mg · £50
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Repair & Performance

4 peptides · 7 vial options

BPC-157

The "body protection compound" researchers reach for first.
A 15‑amino‑acid synthetic peptide derived from a protective sequence in human gastric juice. Studied extensively in tendon, ligament, muscle and gut tissue repair, making it one of the most cited regenerative peptides.
5mg · £18 10mg · £29
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TB-500

A widely used soft-tissue research peptide.
A synthetic fragment of thymosin beta‑4 involved in cell migration, actin polymerisation and angiogenesis. Frequently paired with BPC‑157 in soft‑tissue repair research.
5mg · £23 10mg · £39
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Thymosin Alpha-1

Immune signalling, refined.
A 28‑amino‑acid peptide originally isolated from the thymus gland. Studied for T‑cell modulation, innate immunity and post‑viral recovery in experimental models.
5mg · £45
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Peptides Weekly Dosage Calculator v3
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Quick reference (2 mL bacteriostatic water)

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For laboratory research use only. Not intended for human or animal consumption. Calculations are mathematical estimates based on the values you enter — always cross-check against your own protocol and a calibrated syringe before any laboratory use.

Questions? Get in touch.

Whether you have a question about peptides, research, community membership, GLP Weekly, or a potential collaboration, we’d love to hear from you.

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FROM THE NEWSLETTER

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BPC‑157: Hype, Healing Or The Future Of Recovery?

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Retatrutide Explained: What The Latest Research Really Says

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10 MAY 2026

Understanding GHK‑Cu And Why Researchers Are Paying Attention

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Free weekly briefings on GLP-1s, metabolic peptides, longevity science and what’s worth paying attention to. The catalogue here is the companion piece — the writing is where it starts.

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