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ForumsOral GLP-1 AgonistsRybelsus real-world vs clinical trial efficacy — what worked for you?

Rybelsus real-world vs clinical trial efficacy — what worked for you?

B12Beth Wed, Jul 30, 2025 at 2:53 AM 15 replies 1,558 viewsPage 1 of 3
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B12Beth
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Jul 30, 2025 at 2:53 AM#1

I switched from injectable to oral semaglutide for travel reasons and the fasting window is proving harder to hold than the injection ever was.

The bit I cannot resolve on my own is how much of the oral variability is the SNAC absorption window and how much is dose, because the two get conflated constantly.

If the honest answer is that nobody knows, that is a useful answer and I would rather have it.

12 7GraceAZ_72, carl_compliance, DanielChem_CHI and 9 others
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PeptideChemSF
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Jul 30, 2025 at 3:02 AM#2

Taking the question as asked, rather than the general version of it. 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.

11 6dave_SLC, FDA_TrackerJim, ricardo_MIA and 8 others
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EndoResFellow
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Jul 30, 2025 at 3:11 AM#3
PeptideChemSF said:
Orforglipron is the more interesting oral story because it is not a peptide at all.

No disagreement with PeptideChemSF. One condition attached. Worth adding that the tablet is taken daily, so a missed dose costs far less than a missed weekly injection. That is a genuine advantage nobody lists.

I would rather be corrected than agreed with, if it comes to it.

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MASHdoc_SA
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Jul 30, 2025 at 3:20 AM#4
B12Beth said:
I switched from injectable to oral semaglutide for travel reasons and the fasting window is proving harder to hold than the injection ever was.

This matches mine closely enough to be worth saying so. The OASIS programme put 50mg oral in the same territory as 2.4mg injectable — around 15% mean weight loss — but it needed a dose 20 times larger to get there because almost none of the tablet is absorbed. The dose numbers are not comparable across routes and quoting them side by side confuses people.

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SleepDoc_PDX
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Jul 30, 2025 at 4:07 AM#5

Clinical perspective, offered as context rather than as advice. The mechanism and the magnitude are separate questions. Agreeing that something happens says nothing about whether it happens enough to act on.

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