What are GLP-1 peptides?

GLP-1 peptides are analogues of glucagon-like peptide-1, an incretin hormone released by the gut. In the published literature they are studied for their action on GLP-1 receptors, which affects insulin secretion, gastric emptying and appetite signalling. Retatrutide and Tirzepatide extend the idea to multiple receptors at once. Valtrax supplies these compounds for laboratory research only.

What is the difference between Retatrutide and Semaglutide?

Semaglutide is a single-target GLP-1 receptor agonist. Retatrutide is a triple agonist active at GLP-1, GIP and glucagon receptors. The published body-composition and metabolic findings differ substantially between them, as do the reported tolerability profiles in trial literature.

Are these compounds purity tested?

Yes. Janoshik Analytical, an independent third-party laboratory, confirms identity by mass spectrometry and purity by RP-HPLC at 99% or better for every lot.

Do you ship metabolic peptides across Canada?

Yes. Orders ship from British Columbia by Canada Post with tracking to every province and territory. Vials are shipped lyophilized, which is stable at ambient temperature for the duration of domestic transit.

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GLP-1 & Metabolic Peptides

The incretin mimetics and metabolic modulators are the most heavily published peptides in circulation, and the shelf most often searched for under the heading of weight loss peptides. Retatrutide, Semaglutide and the small-molecule metabolic compounds here are studied for their effects on appetite signalling, glucose handling and body composition in animal and clinical models. Every vial is lyophilized, identity-confirmed by mass spectrometry and purity tested at 99% or better by RP-HPLC.

5 compounds on this shelf

Research Peptide

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Semaglutide

$95.00

10mg

A synthetic long-acting GLP-1 receptor agonist analogue. Supplied as a lyophilized powder for research purposes only.

Research Compound

5-Amino-1MQ

$40.00

10mg

A methylquinolinium small molecule that inhibits nicotinamide N-methyltransferase (NNMT). Supplied as a lyophilized powder for research purposes only.

Research Peptide

Reta

$70.00

10mg

Retatrutide (LY3437943), a 39-residue acylated peptide built to engage the GIP, GLP-1 and glucagon receptors at once. Supplied as a lyophilized powder for research purposes only.

Research Compound

Restocking

L-Carnitine

TBA

1200mg

The endogenous quaternary ammonium compound that carries long-chain fatty acids into the mitochondrion for oxidation. Supplied as a lyophilized powder for research purposes only.

Research Compound

Restocking

SLU-PP-332

TBA

5mg

A synthetic pan-agonist of the estrogen-related receptors (ERR alpha, beta and gamma). Supplied as a lyophilized powder for research purposes only.

What the incretin literature actually covers

GLP-1 receptor agonists entered the literature as glucoregulatory agents and broadened from there. Semaglutide is the most documented single-agonist compound of the group, with a published record spanning glycemic control, gastric emptying and appetite signalling. Retatrutide is the newer triple agonist, engaging GLP-1, GIP and glucagon receptors simultaneously, and the body-composition figures reported in its trial literature are the reason it draws more search interest than any other research peptide in Canada right now. Tirzepatide sits between the two as a dual GLP-1/GIP agonist. Read the primary sources before designing anything: the dose-response curves differ sharply between compounds and between species.

Metabolic compounds outside the incretin class

5-Amino-1MQ is an NNMT inhibitor rather than a receptor agonist, and the literature around it concerns nicotinamide salvage and adipocyte metabolism — a mechanistically distinct route to the same endpoints the incretin papers measure. SLU-PP-332 is an ERR agonist studied as an exercise mimetic, with published work focused on mitochondrial biogenesis and oxidative capacity. L-Carnitine appears here for its role in fatty-acid transport into the mitochondrion. Grouping them on one shelf is a convenience of subject matter, not a claim that they are interchangeable; the mechanisms have almost nothing in common.

Handling, reconstitution and storage

Everything on this shelf ships lyophilized. Reconstitute with bacteriostatic water, add the diluent slowly against the vial wall rather than directly onto the powder cake, and swirl instead of shaking — these are peptides in the 3–5 kDa range and mechanical agitation degrades them. Reconstituted vials belong at 2–8 °C; unopened lyophilized powder is stable far longer and should stay frozen if it will sit for months. Our peptide calculator will work out concentration per unit volume for any vial size and diluent volume combination on this shelf.

Questions

GLP-1 & Metabolic peptides — common questions

What are GLP-1 peptides?: GLP-1 peptides are analogues of glucagon-like peptide-1, an incretin hormone released by the gut. In the published literature they are studied for their action on GLP-1 receptors, which affects insulin secretion, gastric emptying and appetite signalling. Retatrutide and Tirzepatide extend the idea to multiple receptors at once. Valtrax supplies these compounds for laboratory research only.
What is the difference between Retatrutide and Semaglutide?: Semaglutide is a single-target GLP-1 receptor agonist. Retatrutide is a triple agonist active at GLP-1, GIP and glucagon receptors. The published body-composition and metabolic findings differ substantially between them, as do the reported tolerability profiles in trial literature.
Are these compounds purity tested?: Yes. Janoshik Analytical, an independent third-party laboratory, confirms identity by mass spectrometry and purity by RP-HPLC at 99% or better for every lot.
Do you ship metabolic peptides across Canada?: Yes. Orders ship from British Columbia by Canada Post with tracking to every province and territory. Vials are shipped lyophilized, which is stable at ambient temperature for the duration of domestic transit.

Other research shelves

GH Secretagogues

CJC-1295, Ipamorelin, GHRP-2 and Tesamorelin — GHRH analogues and ghrelin-receptor agonists studied for growth hormone release, IGF-1 and body composition. Purity tested by Janoshik.

Longevity & Mitochondrial

MOTS-c, NAD+ and SS-31 — mitochondrial-derived peptides and cofactors studied in the longevity, cellular-energy and oxidative-stress literature. Janoshik purity tested.

Supplies & Diluents

Bacteriostatic water and reconstitution supplies for lyophilized peptide research. Shipped from British Columbia with tracked Canada Post delivery.

Or browse the full compound index.

Laboratory Use Only

Everything Valtrax Research ships is bench material for in-vitro work. None of it is a drug, a supplement, a cosmetic, or a medical device, and none of it is intended for human or animal use, ingestion, or administration. Placing an order is your confirmation that you are a qualified researcher buying for lawful research, under every Canadian law and regulation that applies to you.