GLP-1 receptor activation slows gastric emptying (making food stay in the stomach longer, which extends satiety), reduces glucagon secretion (lowering blood sugar), and acts on hypothalamic neurons to reduce hunger drive
People with ongoing absorption problems may need regular injections to stay healthy
Alternative routes include oral administration (primarily for BPC-157 and gut-targeted protocols), nasal spray delivery (useful for neurological peptides like Semax), and topical application (primarily for GHK-Cu skin applications)
Vitamin B 12 deficiency can comment in the following clinical pictures: Hyperchrom macocytic megaloblast anemia (Perniciosa, Biermer-Anemia, Addison-Anemia
Spiers PA 1 , Myers D, Hochanadel GS, Lieberman HR, Wurtman RJ