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ForumsSemaglutide (Ozempic / Wegovy)Semaglutide storage after reconstitution — 28-day stability data Page 2

Semaglutide storage after reconstitution — 28-day stability data

CarlaRPh_TPA Mon, Apr 13, 2026 at 5:24 AM 17 replies 738 viewsPage 2 of 4
DanielChem_CHI
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Apr 13, 2026 at 6:46 AM#6

The figures, for anyone assembling their own picture. For anyone assembling their own picture: Tmax is one to three days, terminal half-life about 165 to 170 hours, steady state at four to five weeks, and subcutaneous bioavailability near 89%. Those four numbers explain most of the questions people ask about timing.

Last edited: Apr 13, 2026 at 8:46 AM
20 15fiona_VT, denise_HTX, raj_cambridge and 17 others
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Dr.PathRoch
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Apr 13, 2026 at 7:18 AM#7

Following on from Dr.AddMedPHL — and this may be the naive question:

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?

19 14InsuranceTom, WendyG_ATL, SaraMom3 and 16 others
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JenPlateau
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Apr 13, 2026 at 7:50 AM#8
DanielChem_CHI said:
For anyone assembling their own picture: Tmax is one to three days, terminal half-life about 165 to 170 hours, steady state at four to five weeks, and…

Adding the part of the answer the thread has not reached. Steady state is the thing most people miss. The terminal half-life is about a week, so every dose step takes four to five weeks to fully express itself. Judging a step at day ten is judging the ascent, not the plateau, and it is the single commonest reason people escalate before they needed to.

18 13RunnerRach, TrialNerd_Beth, HPLC_Greg and 15 others
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CarlaRPh_TPA
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Apr 13, 2026 at 8:22 AM#9

Closing the loop on my own question.

Follow-up — I binned the frozen one. Aggregation does not undo itself and I was not going to inject a maybe.

17 12labquiet_amy, emily_PDX, Dr.SleepRoch and 14 others
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bri_stats
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Apr 13, 2026 at 10:55 AM#10
JenPlateau said:
Steady state is the thing most people miss.

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.

Worth separating that from semaglutide, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

Last edited: Apr 13, 2026 at 2:55 PM
25 23julia.endo, JessicaM_2024, TomFromTexas and 22 others
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