I cant agree with Years, pg has a shelf life of 2yrs VG 1.5, its the additives to the Nic juice that go bad more so than the Nic itself, "YEARS" no way I mean cmon years, I just cant and wouldn't vape juice that is years old, I have purchased and stored lots of juice in my vaping time and now I don't even want juice that's more then 7-8 months old anymore and much rather would be vaping fresh juice then stuff that is years old, besides when juice does go bad believe me you will know it, been there done that,, it has one foul taste to it once it turns ! just my opinion of course guys but I have had some juice that has turned in as little as 8 months and others that has turned in a year, and then have had some that lasted almost 2 but I wouldn't vape it at that point. Even if you buy 100mg Nic juice max shelf life is 2 yrs posted on the bottle.