How does sitagliptin work? DPP-4 inhibitors and GLP-1 mimetics?

Sitagliptin helps your body control blood sugar better by using a special tool called DPP-4 to keep another helper, GLP-1, working longer.

Imagine you're playing with a toy that makes your favorite song play. But the song stops after a few notes because someone hits a button to turn it off. That button is like DPP-4. Now, if we stop DPP-4 from hitting that button, the whole song plays longer, just like how sitagliptin works.

Sitagliptin acts like a little friend who stops DPP-4 from turning off GLP-1 too soon. This means GLP-1 can keep helping your body lower blood sugar for longer, like having that toy play the full song without interruption.

GLP-1 is kind of like a helper who tells your pancreas to make more insulin, which helps take sugar out of your blood. If sitagliptin keeps GLP-1 working longer, it's like letting that helper stay on the job for more time, helping you feel better and keep your blood sugar in check.