The Summary:

Peptides: Require refrigeration to prevent rapid breakdown and oxidation. Temperature should be 36-46 degrees F.

Injectable aminos: Stable as single amino acids, not subject to rapid chemical breakdown at room temperature.  They do not need refrigeration as a result.

BAC water: Contains preservatives, designed to be stored at room temperature safely for its intended in-use period.

The scientific details:

Peptides need to be refrigerated because they are delicate, easily degradable molecules, while injectable amino acids and bacteriostatic water (BAC water) are far more stable and do not require refrigeration for safety or potency.

Why Peptides Require Refrigeration:

Peptides are chains of amino acids linked by peptide bonds, and their chemical structure is sensitive to environmental factors like heat, light, and moisture. Exposure to these factors accelerates reactions such as hydrolysis, oxidation, and bacterial degradation, which can render peptides ineffective or biologically inactive. Refrigeration (36-46 degrees F) dramatically slows these processes, helping preserve the peptide’s proper structure, potency, and sterility for weeks or months after reconstitution, and even longer for lyophilized powders.

Why Injectable Aminos and BAC Water Do Not:

Injectable amino acids are simple, single-molecule compounds. Unlike peptide chains, they are not prone to complex degradation processes and are very stable at room temperature for extended periods. 

Similarly, bacteriostatic water contains a small amount of benzyl alcohol preservative, which inhibits bacterial growth and prevents contamination for up to 28 days even if stored at room temperature. The chemical makeup of BAC water and its low susceptibility to degradation means no refrigeration is necessary.

We refrigerate to reduce peptide breakdown not for sterility purposes as the BAC Water handles that.

Do not put them at the back of the fridge where it’s coldest, you want them between 36 and 46 degrees not 32 degrees which will cause gelling.

Store your aminos away from light.