For research and educational purposes only. PepTalk discusses what researchers study in laboratory settings — not medical advice. Products are sold for laboratory research use only.
Research Peptide
GIP/GLP Tirz
The dual-incretin agonist behind the metabolic-research wave — freeze-dried, ultra-pure, ready to reconstitute.
GIP/GLP Tirz is part of 4 research stacks — 10% off every item plus free bacteriostatic water.
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For research and educational purposes only. PepTalk discusses what researchers study in laboratory settings — not medical advice. Products are sold for laboratory research use only.
The short version
Tirz is a single-molecule "dual agonist" — it switches on two of the body's own appetite-and-metabolism receptors at once (GIP and GLP-1) instead of just one. That two-in-one design is why it's become one of the most closely watched compounds in modern metabolic research, and why the human trials in its class have drawn so much attention.
What researchers are looking at
Your body already runs an internal system for managing blood sugar, hunger, and how energy gets stored. Two of the messengers in that system — called GIP and GLP-1 — are normally released after you eat. Most earlier research compounds pulled just one of those two levers. This compound is built to pull both.
In the literature, that dual action is described as working on several fronts at once: the GLP-1 side slows how quickly the stomach empties and signals fullness to the brain, while the GIP side is studied for how the body handles fat and responds to insulin. Researchers describe the two pathways as synergistic — together they appear to move metabolic markers further than either one alone.
Because the headline numbers come from animal models and from the large human trials run on this class of compound, the figures are best read as what was reported in those studies rather than a personal outcome. What keeps the compound under the microscope is how consistently both pathways show up across the data.
Two receptors, one molecule
The compound switches on both the GIP and GLP-1 receptors at the same time, instead of just one.
Slower emptying, more fullness
The GLP-1 side slows gastric emptying and signals satiety to the brain in the models studied.
Fat and insulin handling
The GIP side is studied for how fat is stored and how the body responds to insulin.
Where the evidence stands
an honest mapDeeply characterized in rodent & primate models
Large randomized Phase 3 trials in its class
From the lab toward the clinic
This compound's class has been through some of the largest randomized, placebo-controlled human trials in metabolic research — the SURMOUNT-class program. Across those trials, average total body-weight reductions of roughly 20–22% were reported at the highest concentrations studied, putting this among the most rigorously tested compounds on the page.
At a glance
What it is
A dual-incretin agonist
GIP + GLP-1
Studied for
Metabolic & appetite research
weight, glucose, fat
How long it lasts
Long-acting
~5-day half-life
Research stage
Large human trials
Phase 3 in its class
How it arrives
Lyophilized powder
Ships freeze-dried for stability and shelf life. Before research use, it's reconstituted with bacteriostatic water.
Bacteriostatic water
Needed to reconstitute
Certificate of analysis
Common questions
All products on FastPeps are labeled Research Use Only (RUO), and this is a legal requirement, not just fine print. It means these compounds are sold strictly for scientific research and laboratory purposes, not for personal use, self-administration, or medical treatment. This label exists because these compounds have not completed the FDA approval process to be sold as drugs or supplements. When you purchase from FastPeps, you are agreeing the product is for research purposes only.
For laboratory and research use only. Sold exclusively for in-vitro research and laboratory experimentation. Not a drug, supplement, or article intended for human or veterinary use; nothing here is medical advice or a claim of therapeutic benefit. Statements describe findings from published research.
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