Since probiotics are live microorganisms, they need to be stored properly with care. Proper storage conditions will vary depending on the strains of probiotics in the product. Probiotics should not be stored in the refrigerator unless instructed to do so on the packaging by the manufacturer. At Puritan’s Pride, we take special care to choose the right packaging to suit the particular needs of the strains in our products. Strains that are sensitive to humidity are packaged in advanced bottles with desiccant technology to control moisture. Other strains are happy in our opaque white bottles that block out light. Things you can do at home to ensure the potency of your probiotics are to make sure the bottle is tightly sealed and avoid storing in areas such as the bathroom where showers can generate excessive humidity.