Yeah, pay attention to the sell by date. I would still consume it over a year by that date. The stuff doesn't turn to chicken poo on 12/05, and they are very generous with those dates. On 12/05 (hypothetically) 99% of their stock needs to be good. So, a year later maybe 50% has deteriorated to 90% purity. With proteint I wouldn't care much. Vitamins or steroids I'd be a little more weary.