Functional Formularies Keto Peptide is designed to have a shelf-life of up to 2 years from the date that the pouches are packaged (date printed on the pouch). The shelf-life is also dependent upon how the product is stored and handled over the time period. Under the guidelines of our research laboratories, if Keto Peptide is stored and handled properly at ambient temperatures of 60º to 70º degrees Fahrenheit, the maximum shelf-life for the product is 2 years.