I have one of these as I always have at least one med that the nurse/paramedic/doc hasn't heard of and can't spell. While my asthma is usually not bad enough that I'm not able to talk (I try to get help before it gets quite that far), my brain is usually not in a fit state to spell generic drug names or remember which trade name goes with which generic (I think in generics). It's kept in my purse for convenience and is in a minimum of 12pt type. When I'm on lots of meds, I just do a double-size one and fold it in half rather than reduce the type size. Mind you, my brother comes with a whole folder. But then he usually comes with a (competent) nurse as well...