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ForumsPharmacology & MechanismsSemaglutide fatty acid sidechain — acylation and albumin binding kinetics Page 3

Semaglutide fatty acid sidechain — acylation and albumin binding kinetics

PeptideChemSF Wed, Jun 3, 2026 at 12:48 AM 19 replies 435 viewsPage 3 of 4
SteveThurs
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Jun 3, 2026 at 10:40 PM#11
rachel_ABQ said:
Steady state is the thing most people miss.

Thank you for spelling out the reasoning rather than just the conclusion. Taking it to my next appointment.

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Dr.LipidDallas
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Jun 4, 2026 at 10:54 AM#12

From the other side of the consultation, briefly.

PeptideChemSF said:
...but the FDA says semaglutide...

Interesting point. I want to add some regulatory nuance: the FDA labeling reflects the specific clinical trial data submitted for approval. Real-world clinical practice often extends beyond the FDA label based on emerging evidence and clinical judgment.

Example: semaglutide was first approved for diabetes (Ozempic), then obesity (Wegovy). The molecule didn't change — our understanding of its applications expanded. Similarly, semaglutide may evolve as more data accumulates.

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Dr.ObesityLA
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Jun 4, 2026 at 11:07 PM#13
pete_nash said:
The mechanism that matters here is not stomach emptying, it is central.

Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. The trial means are being read too generously in this thread. STEP populations were selected, supported, and titrated by protocol, and the real-world curves are consistently a few points worse. That difference is not noise, it is what happens when you remove the study infrastructure.

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Dr.PathRoch
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Jun 5, 2026 at 11:20 AM#14

The figures, for anyone assembling their own picture. Numbers worth memorising for this class: Tmax one to three days for the weekly peptides, terminal half-life about a week for semaglutide and about five days for tirzepatide, steady state at four to five half-lives, subcutaneous bioavailability high enough that site choice is irrelevant.

Last edited: Jun 5, 2026 at 5:20 PM
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Admin
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Jun 5, 2026 at 11:33 PM#15

Moderator note: reminder that nothing in this thread is medical advice, and that clinical claims need a source. Report rather than reply if it drifts again.

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