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GIP (Glucose-Dependent Insulinotropic Polypeptide) Receptor: This receptor is also targeted by tirzepatide (Mounjaro, Zepbound)

But a generic manufacturer could potentially launch earlier with a different formulation (different buffer system, different absorption enhancer) if they can prove bioequivalence

Gene expression [edit source] The proglucagon gene is expressed in several organs, including the pancreas (-cells of the islets of Langerhans), gut (intestinal enteroendocrine L-cells) and brain (caudal brainstem and hypothalamus)

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Can supplements aid in muscle retention