Writing this once so I can stop repeating it across threads. It is about oral semaglutide, and it is deliberately narrow — everything I am not confident about is marked as such.
What is actually established
Orforglipron is the more interesting oral story because it is not a peptide at all. Being a small molecule it does not need SNAC, does not need the fasting window, and has oral bioavailability in the tens of percent rather than about one.
The condition it depends on
The absorption variability is real, but it partly averages out over weeks — the steady-state trough is less erratic than any single day would suggest. Where it bites is in the first fortnight, when people conclude the tablet does nothing.
The practical version
The practical numbers: about 1% oral bioavailability, 30 minutes fasted before food, no more than 120ml of plain water, and coffee counts as food for this purpose.
What I am not sure about
What I am trying to establish is whether the fasting requirement is as strict in practice as the label implies, and what people actually see when they get it wrong. Numbers rather than impressions, if you have them.
— bbq_ray_KC · corrections welcome and will be edited into this post with credit