I have a pack of these, Expire date 11-13, as I see it that's Nov 2013. Are they still usable and if so for how long. They are in blister packs so how can they have a use by date?
they don't go rotten like meat but the active chemicals may lose their potency. They won't kill you, they just won't work quite as well as new ones. I wouldn't worry about three months old myself, just take them and see.
2013 and you are worried? I rarely look at use by dates and can't say I have come to any harm yet. Goes for foodstuff as well. I have jar of honey with a 2014 date on it. They found recently 2000 year old honey still perfectly edible!
Yes Jeza - a best before date amazed me. i also have eye drops that say use within a month of opening but is mainly witch Hazel so you have to wonder where is the danger, or do they just want you to throw away and buy more.