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Evidence-based GLP-1 & peptide discussion since 2023
ForumsOral GLP-1 AgonistsIs oral sema actually as effective as the injection version? — my results so far

Is oral sema actually as effective as the injection version? — my results so far

NurseAsh_DET Tue, May 6, 2025 at 11:52 AM 14 replies 1,585 viewsPage 1 of 3
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NurseAsh_DET
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May 6, 2025 at 11:52 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 whether the fasting requirement is as strict in practice as the label implies, and what people actually see when they get it wrong.

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

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Dr.LipidDallas
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May 6, 2025 at 11:57 AM#2

This one has a reasonably settled answer, so here it is. 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.

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SurmountFan_IN
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May 6, 2025 at 12:02 PM#3
Dr.LipidDallas said:
Orforglipron is the more interesting oral story because it is not a peptide at all.

Agreeing with Dr.LipidDallas, and the qualification matters more than the agreement. 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.

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tampaLisa73
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May 6, 2025 at 12:07 PM#4
NurseAsh_DET 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.

Can confirm the pattern NurseAsh_DET describes. 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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claudia_zurich
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May 6, 2025 at 12:33 PM#5

From the other side of the consultation, briefly. Take it one variable at a time. Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent argument can untangle them after the fact.

Last edited: May 6, 2025 at 6:33 PM
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