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    Tirzepatide

    Metabolic

    Tirzepatide (GLP-1/GIP Dual Agonist)

    PepPal is a research assistant. All information is provided for educational and research purposes only and is not medical advice. Peptides discussed are not approved for human consumption unless prescribed by a licensed medical professional.

    Overview

    Tirzepatide is an FDA-approved dual GIP/GLP-1 receptor agonist used for type 2 diabetes (Mounjaro) and obesity (Zepbound). It has shown superior weight loss results compared to single GLP-1 agonists in clinical trials.

    Mechanism of Action

    Tirzepatide activates both GIP and GLP-1 receptors, enhancing insulin secretion, suppressing glucagon, slowing gastric emptying, and reducing appetite through central and peripheral mechanisms. The dual agonism provides additive metabolic benefits.

    Research Contexts

    Type 2 diabetes • Obesity / weight loss • Cardiovascular health • NAFLD/NASH • Metabolic syndrome

    Dosing (PepPal Protocol)

    PepPal only publishes dosing from our vetted protocol PDFs. For peptides without an official PepPal protocol, see the Protocols page.

    PepPal's vetted GLP-class protocol is Retatrutide (GLP-3RT). See /protocols for the full Retatrutide protocol. We do not publish dosing for Tirzepatide — for prescribed Mounjaro/Zepbound, follow your prescriber's titration plan.

    Reconstitution Guide

    Vial size: See PepPal protocol (not yet available for this peptide) Water volume: See PepPal protocol (not yet available for this peptide) Concentration: See PepPal protocol (not yet available for this peptide) Reconstitution math depends on dosing — and we only publish reconstitution guidance for peptides that have an official PepPal protocol PDF. Check /protocols for vetted protocols.

    Storage Guidelines

    Before reconstitution: General peptide guidance: refrigerate or freeze, protect from light. Specific guidance only published for peptides with an official PepPal protocol. After reconstitution: General peptide guidance: refrigerate at 2–8°C. Specific guidance only published for peptides with an official PepPal protocol.

    Half-Life & Stability

    Half-life: Not published here — PepPal only publishes detailed pharmacokinetic guidance for peptides covered by an official protocol PDF. Stability: PepPal does not publish a stability/cycling protocol for this peptide. See /protocols for vetted protocols.