GIP (glucose-dependent insulinotropic polypeptide) is a gut hormone, like GLP-1, that your body releases after you eat. It helps your body handle blood sugar and plays a role in how full you feel. Most weight-loss drugs copy GLP-1 only. Tirzepatide is special because it copies both GIP and GLP-1 at the same time, which is one reason it works so well.
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