Expired protein powder reddit. How long does Protein Powder last? I have just got back into the gym after some time off and I have some Protein Powder that has been open for around 6 months. I have a open bottle of protein powder, manufactured 3/2019, best before date 3/2021. The expiration date is 12/2017 and manufacturer date is 2015. One i’ve just opened looks and smells fine. You should always check the dates before you make those smoothies. Over time, protein powder can degrade, lose its nutritional value, and develop an unpleasant taste and odor. That said, when I compared it to "new" whey isolate, it did feel and taste a little stale. So, what should you do with expired protein powder? Understanding the shelf life of protein supplements answers the common question, does protein powder expire, helping to maintain nutritional safety. I've eaten my protein whey isolate that has > 6 months expired with no ill effects. Consuming expired protein powder can pose several risks, primarily due to the potential decrease in nutritional value.
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