Good morning everyone, I have a question about protein powders and liquids. I've been doing some reading and research but this is not something I've used before. Since most of them are whey based and/or contain milk derivatives and products, what is the shelf life? For example, post-op, I will only be drinking two ounces at a time, to start. If I'm using a premixed liquid protein drink, how long will it last in the refrigerator once I open it? I think the containers are about 16 oz. that could last days. Also, adding protein powder to things like Jell-O and pudding that I would pre make in 2 ounce containers. How long will that protein be good in the refrigerator prepared like that? I hope I'm making sense[emoji23]

I honestly would have never of thought to ask this question, but I bought the isopure zero bottles, to try, and I drank half of one bottle closed it and put it in the refrigerator and when I went to drink it the next day it smelled rancid. I don't know if I just got a bad bottle, or if it wasn't supposed to be refrigerated again after I opened it and drank half. Any opinions or experience on this would be appreciated![emoji4]

Bacteria grows the fastest in high protein moist environment. I prob wouldn't recommend pre making protein pudding in large quantities unless you plan on freezing them. I just remember trying to wash my blender bottle after after drinking protein powder. It's disgusting!!