Storing & Reconstituting Retatrutide (Research)
Last updated 13 June 2026
Quick answer
Storing the dry powder
Retatrutide comes as a freeze-dried (lyophilised) powder. In this dry form it is stable when kept cold and out of light. Labs often refrigerate it, and freeze it for longer storage.
Mixing it (reconstitution)
Reconstitution just means adding liquid to the powder. The simple steps used in research:
- Let the vial reach room temperature.
- Add bacteriostatic water slowly down the inside wall of the vial.
- Let it dissolve on its own. Swirl gently if needed. Do not shake.
- Store the mixed liquid in the fridge.
Working out the strength
How much water you add sets how strong the mix is. Use our reconstitution calculator to see concentration and syringe units for research calculations.
For laboratory research use only. Not for human use. See our disclaimer.
Looking at suppliers?
See where UK researchers source retatrutideCommon questions
How do you store retatrutide?+
Store the dry, freeze-dried powder cold and away from light. Many labs keep it refrigerated, and frozen for long-term storage. Once mixed with water, keep it in the fridge and use it within a few weeks.
What water is used to mix retatrutide?+
In research, bacteriostatic water is the usual choice. It contains a small amount of preservative that helps the mix stay stable in the fridge.