This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.
Delayed gastric emptying is the mechanism behind most of the plausible interactions in this class: anything whose absorption depends on how quickly the stomach empties can behave differently.
Post #28 describes the usual case. This is about the unusual one.
The practical advice most consistently given by pharmacists here is to keep the timing of other oral medication consistent rather than to change it, because consistency is what makes a problem visible.
Oral contraceptives and delayed emptying: I have looked for the primary source twice and failed twice. Either it does not exist or it is somewhere I do not know to look, and I would like to know which.
The arithmetic in post #34 is right; the assumption feeding it is the part to check.
Oral medications with a narrow therapeutic index are the ones where that matters most. The interaction is about rate and timing rather than about the total absorbed, in most published cases.
Answering the question post #32 raises rather than the one it answers.
SGLT2 inhibitors: frequently co-administered and relevant to renal and cardiovascular discussion, not to interactions. There is no pharmacokinetic interaction of concern.
I have kept the units in throughout, for the obvious reason.
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