i didn't know people were mixing it themselves, i have gotten mine from Option Care in either Dallas or FortWorth, not sure which, it comes in syringes with little caps on them, i assume they mixed it but i'm not sure. They are great, they deliver it via messenger every month, comes in a refrigerated box and everything, most of the time the freezer packs are still close to fozen when i get it, even though does saline really need refrigerated? if it doesn't it would save me a lot of space in the fridge...