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ForumsSemaglutide (Ozempic / Wegovy)Semaglutide storage after reconstitution — 28-day stability data Page 3

Semaglutide storage after reconstitution — 28-day stability data

CarlaRPh_TPA Mon, Apr 13, 2026 at 5:24 AM 17 replies 738 viewsPage 3 of 4
B12Beth
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Apr 14, 2026 at 1:32 PM#11
hans_munich said:
Steady state is the thing most people miss.

Thank you — that is the clearest version of this I have read, and I have read a lot of them.

26 24GraceAZ_72, carl_compliance, DanielChem_CHI and 23 others
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PeptideChemSF
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Apr 15, 2026 at 4:08 PM#12

Clinical perspective, offered as context rather than as advice.

Storage question about storage and cold: my pen was left out of the fridge for 18 hours. Is it still good?

Per the manufacturer, both Ozempic and Wegovy pens can be stored at room temp (up to 86°F) for up to 28 days after first use. So yes, it should be fine as long as it wasn't exposed to extreme heat.

27 0dave_SLC, FDA_TrackerJim, ricardo_MIA and 24 others
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DataDave
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Apr 16, 2026 at 6:44 PM#13
VendorMark 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.

Happy to go further on any of that.

28 1LondonLisa, mike_nyc, VendorMark and 25 others
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TrialTracker_MD
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Apr 17, 2026 at 9:19 PM#14
CarlaRPh_TPA said:
The distinction that matters is unopened versus in use.

Cold chain shipping for storage and cold: my last order arrived with the cold pack completely melted and the vial at room temperature. I contacted the vendor and they reshipped with better insulation.

What to look for in shipping: temperature monitoring strip inside package. If your peptide arrives warm, contact the vendor immediately. Don't assume it's still good.

29 2Dr.PulmRoch, maya_sedona, stefan_berlin and 26 others
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mike_mod
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Apr 18, 2026 at 11:54 PM#15

Moderator note: the sourcing question belongs in the vendor section and has been split out.

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