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    Peptide Profiles

    GLP-1 Receptor Agonists: A Research Primer

    Semaglutide, tirzepatide, retatrutide — how the latest generation of incretin peptides differ.

    Dr. Helena Rourke
    Dr. Helena Rourke
    Scientific Editor
    Oct 2, 2025
    12 min read
    GLP-1 Receptor Agonists: A Research Primer

    Incretin biology is one of the most active research areas in metabolic science. This primer reviews how single-, dual-, and triple-receptor agonists differ in mechanism.

    Single-receptor agonists

    Semaglutide is the most-studied long-acting GLP-1 mono-agonist in current research literature.

    Dual GIP/GLP-1 agonists

    Tirzepatide adds GIP receptor activity, producing different downstream signalling profiles in research models.

    Triple agonists

    Retatrutide adds glucagon receptor activity and represents the current research frontier.

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    Content in the Thrive Peptides journal summarizes published research and is intended for qualified investigators. It is not medical advice and does not describe products for human consumption.

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