I've taken to carrying around the back of my prescription which lists the medication I'm on. It's in my purse. If I need medical assistance I hand it to the nurse as it saves time, gives the dosage and also has my doctor's details. It also helps when I'm buying over the counter drugs as there are many which can cause an asthmatic reaction. Mind you, with mobile phones getting more techy I'm wondering whether there could be a standard way of accessing such info - rather like ICE