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Storing Your Peptides at Home
Proper storage keeps your peptide medication safe and effective. This guide explains how to store your peptides at home, what to watch for, and how to travel with your medication.
Before Mixing (Unreconstituted / Powder Form)
If your peptide has not yet been mixed with liquid (it may look like a small disc or powder in the vial):
Store in the refrigerator at 36–46°F (2–8°C).
Keep the vial in its original box or wrap it in foil to protect it from light.
Unmixed peptides are more stable than mixed ones, but refrigeration is still recommended.
Check the expiration date on the label. Do not use if expired.
After Mixing (Reconstituted / Liquid Form)
Once your peptide has been mixed with bacteriostatic water or another diluent:
Always refrigerate at 36–46°F (2–8°C).
Use within 28 days of mixing (or as directed by your provider).
Write the date you mixed the peptide on the vial with a marker so you can track it.
Never freeze reconstituted peptides — freezing destroys the medication.
Keep the vial upright if possible to prevent the rubber stopper from staying in contact with the liquid.
Quick Reference Storage Chart
Form
Temperature
Duration
Light
Freeze?
Powder (unmixed)
36–46°F (2–8°C)
Until expiration date
Protect from light
Not recommended
Liquid (mixed)
36–46°F (2–8°C)
Use within 28 days
Protect from light
Never freeze
General Storage Rules
Protect from light: Keep vials in the box, a bag, or wrapped in foil. Direct sunlight and bright light can break down the medication.
Protect from heat: Do not leave peptides in a hot car, near a stove, or in direct sunlight. Even a short time at high temperatures can damage the medication.
Do not shake: Gently roll the vial between your palms if you need to mix it. Shaking can damage the peptide molecules.
Keep out of reach of children and pets.
Store in a dedicated spot in your refrigerator (such as a small container or zip-lock bag) so it does not get knocked around.
Traveling with Your Peptides
If you need to travel with your peptide medication:
Use an insulated cooling bag with ice packs. Pharmacy-style cooler bags work well.
Do not let the vial touch the ice pack directly — wrap the vial in a cloth or place a barrier between them to prevent freezing.
Keep medication in your carry-on when flying. Checked luggage is not temperature-controlled.
TSA tips: You are allowed to bring injectable medications and supplies through airport security. Carry a copy of your prescription or a letter from your provider. Declare your medications at the security checkpoint.
At your destination: Refrigerate your peptides as soon as possible. Ask your hotel for a mini-fridge if one is not available in the room.
Bring extra supplies: Pack extra syringes, alcohol swabs, and a sharps container in case of travel delays.
When to Discard Your Peptide
Throw away your peptide medication and do not use it if:
The liquid looks cloudy or discolored (it should be clear).
You see particles or floating matter in the liquid.
It has been more than 28 days since mixing (or the timeframe your provider specified).
The expiration date on the vial has passed.
The peptide was left out of the refrigerator for more than 2 hours at room temperature.
The peptide was frozen after being reconstituted.
The vial stopper is damaged or the seal is broken.
When in doubt, throw it out and contact your provider for a replacement.
Storage Checklist
Use this checklist to make sure you are storing your peptides correctly:
Peptides are stored in the refrigerator at 36–46°F (2–8°C)
Vials are protected from light (in a box, bag, or foil)
Reconstituted peptides are labeled with the mixing date
Reconstituted peptides are used within 28 days
Peptides are never frozen after mixing
Vials are kept out of reach of children and pets
I have a plan for travel (cooler bag and ice packs ready)