GLP-1 dose weirdness?

The doctor probably should've started at a moderate amount to rule out side effects, not the smallest option. Switching between different options in this drug class usually needs a higher amount and more time before results show. Makes sense starting higher given being maxed out on the previous medication, but personally would've leaned toward a lower starting point first. Good luck.

That's exactly it, because it genuinely is an extreme jump. Five's considered the safe ceiling, 7.5 still fine. Push past that and serious side effects become nearly guaranteed. These aren't interchangeable medications. You don't necessarily need to begin at 2.5 given you're already on a related drug, but they're still fundamentally different compounds, and honestly your prescriber sounds out of their depth. Either that, or if it's a prefilled pen, they might be maximizing the dose just so you're counting clicks correctly. Do not take 15 mg. There's no telling how your system will react, could land you bedridden or stuck by the toilet for days. That's genuinely alarming to me. Been on this exact medication a full year and I've only reached 10 mg. Tolerated it well with minimal issues, though the first few weeks brought several while my body adjusted. So no, that dose makes zero sense. None whatsoever!