Incretin (INtestinal seCRETion of INsulin) hormones, namely GLP-1 and gastric inhibitory peptide (GIP), have long been recognized as playing key roles in glucose homeostasis
Many people do best with a foundational form (like malate) plus a targeted form (like glycinate at night)
The EASL-AASLD consensus modified this in 2014 but kept the main elements of this classification [1]
In addition, it also has a scarcity value, assures the body of fullness, and reduces hunger, resulting in less calorie intake
Generally, that means tracking when you start using a glass vial or insulin pen and discarding it after the particular amount of time listed on the package
It is not an FDA-approved drug in the United States for any indication, and its clinical development was discontinued rather than completed to approval