How long do bottled nutes last?

Hey guys, quick question. I've got some advanced nutrients jungle juice nutrients that is probably 3 years old or so. Maybe its just me or the new environment im in but the plants don't seem to be doing as well as they usually do with this same setup. So im wondering if the nutes have gone bad. How long does a synthetic type nutrient like AN's products last? Thanks in advance!

Theoretically the nutrients themselves will be good forever,its when you add in all the other crap that AN puts in there that you might have to worry.Anything organic based will probably have a shelf life.Im not sure about jungle juice but I thought it was a semi organic nutrient?

im not entirely sure to be honest. might have to just order some more. its cheap enough.