How long does one pouch of PureNourish usually last? Administrator August 16, 2017 17:20 If used daily with the recommended daily use, all Slenderiiz products will last you about 28 days. Related articles PureNourish (Natural) Power Boost (Cocoa) What are the benefits of PureNourish? Would coconut water versus coconut milk be an approved liquid for the PureNourish shakes? What's in my PureNourish? Comments 0 comments Please sign in to leave a comment.