Ejuice typically will last 2 years if made fresh to order which most US vendors do. However, if you order China stuff, use it up first because we don't know how long it's been sitting in a warehouse. Tastyvapor.com is the only vendor that I know of that states in their forum to use their juices up within 10 months (I think they said 10 months but might be 1 year). It has something to do with their flavoring that will go bad. I've read that someone on here that has been
vaping for over 2 years, still has
juice from when he/she first started and for the most part, all of it but a few were still good.
Just keep your juices out of heat and sunlight. I store mine in a cool, dark closet and have never had any issues with it.