Who buys protein and doesn't finish it?
I run through mine like an oj from the law (haha?)
so yeah, dump what you got and pick up new.
If you don't drink it cuz of the taste or w/e... i'd suggest proteinfactory.com > big blast > orange flavor > + a sweetener.
I know flavors are sometimes whack in p shakes, but not this combo..
I actually LIKE to drink it, therefore not just pounding it, rather enjoying it... so my body does too