 Hi this is Dr. Ruscio and I just briefly wanted to speak to receiving probiotics in the mail and if you need to have the freezer pack that comes with the probiotics be frozen or at least be cold upon receiving your probiotic shipment and the good news is no you do not need to have the freezer pack frozen or cold when receiving your probiotics. Probiotics can spend a couple weeks outside of a refrigerated environment without causing an appreciable impact on their viability. Now when storing a probiotic it's important to store it when when storing for weeks and weeks on end in a refrigerated environment but a short term of a probiotic not being refrigerated does not make an appreciable impact. So our manufacturer of course keeps all the probiotics in a refrigerator unit until they ship and then you know when when arriving at your home you want to keep them in a refrigerator also but a day or two in transit not being refrigerated is really not that big of a deal and also if you're traveling and you want to be able to bring a probiotic to and from wherever you're going and this would mean there would be a short period of the probiotic not being refrigerated that's actually okay. However when storing a probiotic for weeks on end that's when it is important to keep it in the refrigerator but a couple days or what could add up to a week or two of total time not being refrigerated does not have any appreciable impact so no need to stretch yourself out with with trying to keep things perfectly and also if you receive a package from us and it does not have the freezer pack frozen or cold that's actually okay and it's nothing to be worried about okay hope this helps