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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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.
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.
From metabolic and longevity to recovery, skin and cognition — every compound below is included because there is a meaningful body of research behind it. Scroll on to browse the full catalogue.
Research use only. Fulfilment by Archangel Labs.
We prioritise compounds and source relationships that continue to earn trust from informed buyers over time.
We rely on careful source-vendor vetting, peer feedback, and the accumulated judgement of an informed community.
We focus on peptides we have tried, reviewed closely, or would be fully comfortable trying ourselves.
Chosen for quality, consistency, and reputation — priced fairly because our model stays lean.
A closely watched triple-agonist in metabolic research.
A first-in-class triple receptor agonist targeting GLP-1, GIP and glucagon pathways simultaneously. Stocked across six vial sizes, from 5mg starter vials to 60mg highest-volume options, to suit different research scales.
Dual-receptor GLP-1 / GIP research peptide.
A dual-agonist acting on both GLP-1 and GIP receptors: the mechanism behind some of the most discussed metabolic research of the last five years. Stocked in three vial sizes for protocol flexibility.
The benchmark GLP-1 receptor agonist.
A long-acting GLP-1 receptor agonist with one of the deepest peer-reviewed literatures in metabolic peptide research. Studied for its effects on glycaemic regulation, appetite signalling and weight modulation in animal models.
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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.
Retatrutide 20mg + community access. A measured starting point.
Retatrutide 20mg + NAD+ 500mg. The next step up.
Retatrutide 20mg + GLOW 70mg. A higher-support option for recovery-focused research.
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.
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 studies investigating wound healing, dermal repair, collagen synthesis and angiogenesis from a unified delivery point.
GLOW extended with KPV for added inflammation-focused research context.
A four-peptide research blend: BPC-157, TB-500, GHK-Cu and KPV in a single 80mg vial. Extends GLOW by adding KPV, a potent anti-inflammatory tripeptide, for models combining tissue repair and inflammation modulation.
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 (the body's pigmentation pathway) and on the melanocortin system more broadly. One of the longer research histories of any peptide on the catalogue.
The original skin-and-tissue copper peptide.
A copper-binding tripeptide first isolated from human plasma in 1973 by Dr Loren Pickart. One of the most-studied peptides in regenerative research, referenced in work on collagen synthesis, skin remodelling and anti-ageing gene expression.
Mitochondrial-derived peptide for metabolic research.
A 16-amino-acid peptide encoded within mitochondrial DNA, one of a new class of mitochondrial-derived peptides identified in the last decade. Studied for effects on insulin sensitivity, AMPK signalling and exercise adaptation.
Pineal-derived tetrapeptide studied for telomere biology.
A synthetic tetrapeptide (Ala-Glu-Asp-Gly) originally isolated from the pineal gland. Studied for its modulation of telomerase activity, circadian regulation and age-related markers in long-running Russian and Eastern European research programmes.
Targeting the mitochondrial inner membrane.
A mitochondria-targeting tetrapeptide that selectively associates with cardiolipin in the inner mitochondrial membrane. Studied for its protective effects on mitochondrial function under oxidative stress.
Russian-origin anxiolytic research peptide.
A synthetic heptapeptide developed from tuftsin, originally researched in Russia for its modulating effects on the GABAergic system. Studied for anxiety-pathway modulation, stress response and immune-neural crosstalk.
Selank's nootropic counterpart.
A heptapeptide fragment of ACTH, developed alongside Selank in Russian neuroscience research. Studied for its effects on BDNF expression, neuroprotection and cognitive performance, often used in parallel with Selank.
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 (downregulating TNF-α and other pro-inflammatory cytokines) across gut, dermal and autoimmune models.
The master antioxidant tripeptide.
A tripeptide of glutamate, cysteine and glycine: the most abundant endogenous antioxidant in mammalian cells. Studied for its role in oxidative-stress regulation, detoxification pathways and cellular redox balance.
The coenzyme behind cellular energy.
Nicotinamide adenine dinucleotide: a critical coenzyme in cellular energy metabolism, DNA repair and sirtuin signalling. One of the fastest-growing areas in longevity science.
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: the most-studied combination in GH-axis research.
GHRH analogue with the strongest clinical record.
A synthetic growth-hormone-releasing hormone analogue with the most developed peer-reviewed literature of any GHRH peptide. Studied extensively in models of visceral adiposity, lipid metabolism and cognitive function.
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 animal models of tendon, ligament, muscle and gut tissue repair: one of the most-cited regenerative peptides in the literature.
A widely used soft-tissue research peptide.
A synthetic fragment of thymosin beta-4: a naturally occurring protein involved in cell migration, actin polymerisation and angiogenesis. Widely studied for soft-tissue regeneration and vascular repair, often paired with BPC-157.
Immune signalling, refined.
A 28-amino-acid peptide originally isolated from the thymus gland. Studied for its modulating effects on T-cell function and innate immunity, with a growing literature in immune resilience and post-viral recovery models.
Work out the exact draw volume in IU (insulin units) and mL for your target dose. Pick your vial size, the volume of bacteriostatic water you've added, and your target dose — the result updates instantly.
Draw volumes shown as IU on a standard 1 mL insulin syringe (1 mL = 100 IU).
| Vial | 100 mcg | 250 mcg | 500 mcg | 1000 mcg |
|---|---|---|---|---|
| 2 mg | 10 IU | 25 IU | 50 IU | 100 IU |
| 5 mg | 4 IU | 10 IU | 20 IU | 40 IU |
| 10 mg | 2 IU | 5 IU | 10 IU | 20 IU |
| 20 mg | 1 IU | 2.5 IU | 5 IU | 10 IU |
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.
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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.
For research use only. Not for human or animal consumption. No information on this site constitutes medical advice. Peptides Weekly is a worldwide editorial reference and curated catalogue; orders are fulfilled by Archangel Labs. By ordering you confirm you are 18+ and have read and agree to the Terms, Privacy Policy and Research Use Disclaimer linked from the order form.
