SNAC and the mechanism of oral peptide absorption — the long version

SNAC and the mechanism of oral peptide absorption — the long version Writing it up because I had to work it out twice and would rather nobody else did.

Question about what the published evidence for this compound actually consists of.

Every summary I can find describes a mechanism and then describes an effect, without ever saying which studies sit between the two. That gap is the thing I want to understand.

Preclinical, human, or neither — I would like to know which, before anything else.

Timing consistency matters more for oral dosing than for weekly injection, because absorption depends on the state of the stomach and the state of the stomach varies through the day.

I would treat that as a working assumption and revisit it.

That is a cleaner way of putting what I was circling around.

Adding a data point of agreement rather than a data point.

Trial adherence in an oral trial with strict administration requirements is genuinely worse than trial-published data often suggests. That is why the exposure variability in oral formulations is mentioned repeatedly in the discussions here.