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ForumsOral GLP-1 AgonistsRybelsus on an empty stomach is ruining my mornings — anyone have experience?

Rybelsus on an empty stomach is ruining my mornings — anyone have experience?

PharmacoVig_BOS Mon, Jul 22, 2024 at 1:04 PM 41 replies 2,693 viewsPage 1 of 9
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PharmacoVig_BOS
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Jul 22, 2024 at 1:04 PM#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 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.

Happy to be told the question itself is wrong.

5 0amsterdam_pete, LondonLisa, mike_nyc and 2 others
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Dr.RenalNash
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Jul 22, 2024 at 1:32 PM#2

Short answer first, then the reasoning. 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: Jul 22, 2024 at 6:32 PM
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hans_munich
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Jul 22, 2024 at 2:00 PM#3
Dr.RenalNash said:
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…

Dr.RenalNash has the substance of this right. The condition it depends on is worth stating. 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.

3 23Dr.LipidDallas, alex_tucson, kevin_tulsa
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Dr.DermMIA
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Jul 22, 2024 at 2:28 PM#4
PharmacoVig_BOS 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 PharmacoVig_BOS describes. Oral semaglutide is absorbed in the stomach with the help of SNAC, which locally raises pH and protects the peptide long enough to cross. That mechanism is fragile: bioavailability is roughly 1% and highly sensitive to gastric contents, so a mouthful of coffee genuinely changes the exposure. This is why the label wants 30 minutes and no more than half a glass of plain water.

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GenomicsKate
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Jul 22, 2024 at 5:02 PM#5

From the other side of the consultation, briefly. There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.

1 21claudia_zurich
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