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ForumsOral GLP-1 AgonistsRybelsus on an empty stomach is ruining my mornings — May 2025

Rybelsus on an empty stomach is ruining my mornings — May 2025

jason_sac26 Mon, May 26, 2025 at 4:06 AM 7 replies 1,468 viewsPage 1 of 2
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jason_sac26
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May 26, 2025 at 4:06 AM#1

On 25mg oral, four months in, and my results are closer to the low-dose injectable arm than to the numbers being quoted for 50mg.

The question I want answered is whether the fasting requirement is as strict in practice as the label implies, and what people actually see when they get it wrong.

I have searched first, so if this is covered somewhere point me at it and I will read it.

21 16pete_RVA, CarlaRPh_TPA, steph_laguna and 18 others
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TirzTom
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May 26, 2025 at 6:16 AM#2

Short answer first, then the reasoning. 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.

Last edited: May 26, 2025 at 10:16 AM
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FDA_TrackerJim
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May 26, 2025 at 8:26 AM#3
TirzTom said:
Orforglipron is the more interesting oral story because it is not a peptide at all.

That is correct as far as it goes, and here is where it stops going. 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.

Last edited: May 26, 2025 at 11:26 AM
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lucas_SP_BR
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May 26, 2025 at 10:36 AM#4
jason_sac26 said:
On 25mg oral, four months in, and my results are closer to the low-dose injectable arm than to the numbers being quoted for 50mg.

Can confirm the pattern jason_sac26 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.

Last edited: May 26, 2025 at 12:36 PM
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Dr.RaviCardio
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May 26, 2025 at 11:32 PM#5

Clinical perspective, offered as context rather than as advice. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.

Last edited: May 27, 2025 at 12:32 AM
17 12jason_sac26, chris_chi24, tampaLisa73 and 14 others
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