How to Store Retatrutide Properly

Proper storage is essential to maintain the stability and potency of retatrutide.

Lyophilized (Freeze-Dried) Retatrutide

In its freeze-dried powder form, retatrutide is highly stable but remains sensitive to heat, light and moisture.

Long-Term Storage (Up to 3 Years)

• Store at -20°C to -80°C in a deep freezer.
• Keep the vial in its original packaging to protect it from light.
• Store in an airtight, moisture-proof container whenever possible.

Short-Term Storage (Up to 1 Year)

• The freeze-dried powder may be stored in a refrigerator at 2°C to 8°C for up to one year.

Handling Tips

• Allow the vial to reach room temperature before opening to prevent moisture condensation.
• Keep the vial tightly sealed when not in use.
• Store with a desiccant pack if available to reduce humidity exposure.

Reconstituted (Liquid) Retatrutide

Once retatrutide has been mixed with Bacteriostatic Water, it becomes significantly more sensitive to degradation.

Refrigeration

• Store between 2°C and 8°C at all times.
• Place the vial near the back of the refrigerator where the temperature is most stable.
• Avoid storing it in the refrigerator door.

Shelf Life

• Use within 28 to 30 days after reconstitution.
• Discard any unused solution after this period.

Do Not Freeze

• Never freeze reconstituted retatrutide.
• Ice crystal formation can damage the peptide and reduce its biological activity.

Room Temperature

• Do not leave reconstituted retatrutide at room temperature for extended periods.
• If it has been left out for a prolonged time, it should be discarded.

Signs of Degradation

Inspect the solution before every use.

Discard immediately if you notice:

• Cloudiness
• Yellowing or discoloration
• Floating particles or clumps
• Crystals, frosting or precipitation

The solution should always appear clear and colourless.

Best Practices for Reconstitution

Proper mixing helps preserve peptide stability.

• Use Bacteriostatic Water or another suitable diluent as directed.
• If your protocol specifies a buffered solution (such as PBS), follow those instructions.
• Never shake the vial vigorously.
• Gently swirl the vial in slow circular motions until the powder has completely dissolved.
• Do not inject air unnecessarily into the vial.
• Clearly label the vial with:
• Date of reconstitution
• Concentration
• Discard date (28–30 days after mixing)

Storage Summary

Freeze-Dried Powder

• Temperature: -20°C to -80°C (ideal)
• Refrigerated storage: 2°C to 8°C (up to 1 year)
• Shelf life: Up to 3 years when stored correctly

Reconstituted Solution

• Temperature: 2°C to 8°C
• Do not freeze
• Use within 28 to 30 days

Key Takeaway

Correct storage helps preserve the quality and stability of retatrutide. Always protect the peptide from excessive heat, moisture and light, refrigerate immediately after reconstitution, avoid freezing the liquid solution, and inspect the vial before each use. Proper handling ensures the best possible integrity throughout its recommended storage period.