CommunityReconstitution & Math

Tirzepatide reconstitution and storage

8 replies6 peopleOct 15, 2025☆ Follow
Summary

How should tirzepatide powder and reconstituted solution be stored, and what concentration and timelines work for weekly use?

Users report keeping unreconstituted powder in the freezer for longest stability, with fridge storage acceptable short-term. Reconstituted solution is typically held in the fridge for up to six weeks or three months depending on the source, never at room temperature. Vials can remain in original trays or cases during freezing without damage, and labeling beforehand is optional but convenient. One user plans to keep two months' supply in the fridge and the rest frozen while using opened bacteriostatic water for up to 90 days.

What this discussion establishes

Nothing here is advice.

8 replies · 6 people
SlowTimber75archiveopening postOct 15, 2025

Hello, I obtained a 10 mg kit and have bacteriostatic water ready for mixing. A few questions: does a 10 mg/ml concentration work? Planning to begin at the standard 2.5 mg weekly. How long does the mixed solution last in the fridge, and how long at room temperature? Is room-temperature storage okay for the unmixed powder?

SteadyQuill55archiveOct 15, 2025

The common practice is to keep the powder in the freezer before mixing.

NorthAnchor41archiveOct 15, 2025
↳ replying to @SlowTimber75 (opening post)

1. That concentration works. 2. Up to three months refrigerated, avoid room temperature storage. 3. Room temp is possible if away from light and temperature swings, though freezing is preferred to slow breakdown.

PatientKettle47archiveNov 2, 2025

My unmixed tirzepatide has been in the refrigerator for a few days while I get a proper freezer container. Is that fine, or does it need room temperature? Also, first mixing in about four weeks—can I leave one vial in the fridge until then?

WryLedger88archiveNov 2, 2025

That should be okay. If the freezer isn't inconvenient, why not put all of them in there right away?

PatientKettle47archiveNov 2, 2025

I'm worried about vials freezing together or breaking. How to store them safely? Can they stay in the original trays? I need to remove one at a time without thawing the whole set of ten.

WryLedger88archiveNov 2, 2025

No problem, they won't adhere to each other. Use the plastic packaging they arrived in until you have better storage. Freezing only helps them. Have you got a label maker? Labeling before freezing is optional but useful.

ClearHarbour45archiveNov 2, 2025

I store about two months' worth in the fridge and the rest in the freezer. Opened bacteriostatic water lasts 90 days max in the fridge. Mixed GLP-1s stay good in the fridge for six weeks. Since I use higher amounts, a vial doesn't last more than 30 days usually. Planning to get 30 mg sema and ramp up to 4 mg weekly for seven weeks. Even though the standard max is 2.5, studies go to 7.5 mg.

PatientKettle47archiveNov 2, 2025

Appreciate the tips, and sorry for taking over the original poster's thread—it seemed logical to keep going here. I'll make labels at work tomorrow and freeze eighteen vials, leaving two out for soon.

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Tirzepatide reconstitution and storage · ZyraTrack Community