GIPRs have been localized to human pancreatic -cells, and intravenous GIP infusion activates GIPR and intracellular signaling in pancreatic -cells, augmenting glucagonotropic effects in hypoglycemic conditions in humans (130)
In several RCTs, GLP-1RAs, when used alone or in combination with other hypoglycemic agents including metformin, sulfonylurea, DPP-4 inhibitor, thiazolidinedione, and sodium-glucose cotransporter 2 inhibitor, showed superior or non-inferior blood glucose lowering ability compared to insulin treatment [64,65]
This is partly related to reduced caloric intake
The company does conduct third-party tests for quality, purity, and consistency, but it's unclear whether they're done on raw materials, finished products, or both
However, the FDA may take action against facilities that continue to fulfill new orders post-shortage or existing orders beyond the 60-day window
But the way it slightly raises heart rate in some users shows it may have mild cardiovascular effects