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ForumsSide Effects & ManagementInsomnia on semaglutide — circadian rhythm disruption or weight loss related?

Insomnia on semaglutide — circadian rhythm disruption or weight loss related?

Dr.SleepRoch Thu, May 7, 2026 at 12:08 AM 21 replies 761 viewsPage 1 of 5
Dr.SleepRoch
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May 7, 2026 at 12:08 AM#1

Putting this up for argument rather than for agreement. I have read it twice and I am still not certain what it supports.

Albumin binding above 99% is the whole reason weekly dosing works, and it is also why the trough matters more than the peak. People who dose late are not losing a peak, they are letting the trough fall, and the appetite effect tracks the trough.

Where I think it is weakest: the follow-up is short relative to how long people actually take these drugs, so durability is an assumption here rather than a finding.

What I am trying to establish is whether anyone has held at a sub-maximal dose long term and kept the result, or whether the maintenance data only exists at 2.4mg. I have searched first, so if this is covered somewhere point me at it and I will read it.

Note on sourcing:
Figures above are from the primary publication rather than the press summary. If a number here disagrees with one you have, post yours and we will work out which of us is reading a secondary source.
14 9sarah_TO, wendy_avl, jason_paloalto and 11 others
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labquiet_amy
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May 7, 2026 at 12:33 AM#2
Dr.SleepRoch said:
Albumin binding above 99% is the whole reason weekly dosing works, and it is also why the trough matters more than the peak.

All true, with one condition: that curve is for people who reached the dose on schedule. Anyone who slowed the ladder for tolerability is on a different, flatter curve, and comparing yourself with the published mean will make you feel like a non-responder when you are not.

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DanielChem_CHI
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May 7, 2026 at 12:58 AM#3
Dr.SleepRoch said:
Albumin binding above 99% is the whole reason weekly dosing works, and it is also why the trough matters more than the peak.

This is where I part company with the consensus forming above. 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.

Last edited: May 7, 2026 at 2:58 AM
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VanRx_Mike
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May 7, 2026 at 1:22 AM#4

This one has a reasonably settled answer, so here it is. The dose-response is real but shallow at the top. Across STEP 1 and STEP 4 the gap between 1.7mg and 2.4mg is a couple of percentage points of body weight on average, and the average is carrying a wide spread — plenty of people at 1.7mg sit above the 2.4mg mean. If a dose is working and tolerable, "working" is the relevant variable, not "maximal".

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ingrid_STO
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May 7, 2026 at 3:38 AM#5
labquiet_amy said:
All true, with one condition: that curve is for people who reached the dose on schedule.

That holds for the injectable. The oral formulation has different absorption behaviour and the dose numbers are not interchangeable, which is worth saying out loud because people quote them as if they were.

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