Do peptides need to be shipped cold with ice packs?

Lyophilized peptides generally do not require ice for short transit. Data indicate that freeze-dried peptides stay stable during standard shipping of a few days at ambient temperatures below about 30 degrees Celsius, which is why many suppliers ship them without ice. Refrigeration matters mainly for long-term storage, not brief transport.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of travel & shipping. Cold chain myths, and moving peptides safely.