How to Store Peptides

Peptides are incredibly sensitive to their environment, including but not limited to; light, temperature, moisture, movement etc. If any of these factors begin to fall outside the ideal range for the peptides you are storing, you begin to risk denaturing them, that's bad.

When you get your peptides they will be lyophilised which means freeze dried and are like a powder. This is the most stable form they can be in. Once you open that bottle and expose them to moisture or air or temperature change, they start to break down - accelerating with more extreme conditions.

In lyophilised form, they can safely be stored at room temperature for up to 6 months (potentially longer but just to be safe) as long as they are in a dry place out of direct sunlight. Lyophilised peptides can be stored in the fridge for up to two years. I would advise storing them in the fridge regardless, as some peptides may break down faster at room temp, or potentially improper packaging from source.

Once you reconstitute your peptide with Bac (Bacteriostatic) water, this drops enormously - they must be refrigerated (personally at 4 degrees C) and will last 1-2 months.

Peptides, regardless of what form they are in, must be stored in airtight containers - these will typically be provided with purchase, just make sure they're tightened properly.

Certain amino acids, such as cysteine, methionine, and tryptophan make peptides more prone to degradation, especially when reconstituted. They are much more susceptible to oxidation.

Proper storage is essential for maintaining the stability and integrity of your peptides.