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ForumsSemaglutide (Ozempic / Wegovy)Compounded semaglutide stability data — temperature and light sensitivity Page 2

Compounded semaglutide stability data — temperature and light sensitivity

kate.chem Sun, Jun 7, 2026 at 9:34 PM 16 replies 290 viewsPage 2 of 4
PeptideSynthNJ
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Jun 7, 2026 at 11:08 PM#6

The figures, for anyone assembling their own picture. Worth knowing that the injection site changes very little. Abdomen, thigh and upper arm are bioequivalent for semaglutide, so a site change is not a plausible explanation for a bad week.

Happy to go further on any of that.

Last edited: Jun 8, 2026 at 3:08 AM
25 20wanda_boise, NurseAsh_DET, BenResearch_OR and 22 others
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lucas_SP_BR
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Jun 7, 2026 at 11:45 PM#7

Following on from hans_munich — and this may be the naive question:

What the dose-response curve actually looks like above 1.7mg, because the trial means hide how few people account for the extra loss?

24 19Dr.ObesityLA, NurseKim_ATL, paul_denver and 21 others
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Dr.RenalNash
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Jun 8, 2026 at 12:23 AM#8
PeptideSynthNJ said:
Worth knowing that the injection site changes very little.

There is a second half to this that has not been said yet. 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.

23 18Dr.NutriCornell, pam_stl, wei_SG and 20 others
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kate.chem
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Jun 8, 2026 at 1:00 AM#9

Reporting back.

Update: the excursion was survivable and the vial was fine. I now keep a cheap fridge thermometer, which costs nothing and ends the argument.

Last edited: Jun 8, 2026 at 4:00 AM
22 17jennifer_SEA, tyler_CSCS, VanRx_Mike and 19 others
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MeganSA_TX
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Jun 8, 2026 at 4:00 AM#10
Dr.RenalNash said:
Albumin binding above 99% is the whole reason weekly dosing works, and it is also why the trough matters more than the peak.

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.

20 18mike.trainer_LA, sarah_nash92, FitDadDave and 17 others
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