c tirzepatide niacinamide is the dual-action one. Instead of working on a single hormone, it targets two — GLP-1 and GIP — which is why it tends to have a stronger effect on appetite Tirzepatide / Niacinamide – WP

At the GLP-1 receptor, semaglutide activates cAMP/PKA signaling pathways that suppress glucagon secretion, stimulate insulin release, and act on hypothalamic appetite-regulating centers

Any fast pigment shift needs a closer look

The first microbial colonizers of the human gut: composition, activities, and health implications of the infant gut microbiota

Lowering glucagon secretion: Glucagon is secreted from the pancreas, which tells the liver to send glucose into the blood

Facciorusso et al

Zepbound, which mimics a second hormone called gastric inhibitory polypeptide (GIP) in addition to the GLP-1, comes in an injectable, prefilled, single-use pen for just over $1,000 per pen