Are my peptides affected by heat during shipping?

It’s completely normal for packages to feel warm during transit, especially in warmer climates or summer months. Peptides remain chemically stable under normal transit conditions due to lyophilization, ensuring research integrity.

Why Heat Isn’t a Problem

All of our research peptides, unless otherwise stated, are supplied in lyophilized (freeze-dried) form. This process removes virtually all moisture, which is the main factor that leads to peptide degradation. Without water, the molecular structure of the peptide remains stable, even under fluctuating temperatures.

Backed by Science

Research has shown that lyophilized peptides remain stable even after short-term exposure to temperatures as high as 40–45 °C (104–113 °F). Because there’s no moisture present, the peptides do not degrade under normal shipping conditions — meaning their integrity, purity, and quality remain fully intact when they reach you.

Proper Storage Once Received

Research literature indicates lyophilized peptides maintain stability when stored in cool, dry environments (e.g., 2–8 °C). For best results, keep the vials sealed and protected from direct sunlight and humidity.

In Summary

Even if your shipment arrives warm, you can rest assured that your peptides remain completely stable and ready for research use. The lyophilized form is designed for durability, ensuring you always receive a high-quality, temperature-stable product.