Yep it is pretty big, but as its living in my car its plenty managable at the moment, you can move it by hand no problem to wherever you need it but I probably wouldn't want to carry it any great distance. I'm thinking of creating a smaller "medium" sized kit as a sort of in between measure (one that is more easily portable)
The main reason I stick to the small doses of Ibuprofen is just adabtability as it just gives you a few more potions for dealing with small children. But your right the bigger dose are often a lot more conveniant (and its often annoying having to swallow a virtual pile of pills rather than just one).
I think I'm definetly going to add some basic meds to my travel kit (probably stuff like Ibuprofen and an anti-histomine as they are always useful). Previously, if I remember, I take them with me, but there is always the chance I am goiing to forget so I agree sticking some permanntly in the small kit so I can just grab it and go would be a good idea.
My only experience with an epipen has been training to know what to do with people who are carrying them when you are treating them, and generally the technique is make a note of it and find someone (generally someone who knows them or a Dr) who knows what they are doing with them. I would probably be reluctant to use one on someone who I didn't know their medical history, as they can do really bad things to you, so would probably not carry one for that reason.
My current favourate travel pain-killer is Nurofen-Plus. Which is tablets of contains Ibuprofen 200mg and Codeine Phosphate 12.8mg and is about the strongest non perscription pain relief I've found (2 is the standard dose but 3 or even 4 are often given as a perscription, and that amount is really quite strong). I generally don't like getting perscription medicines unless I have a specific use for them (although thats mainly due to the over use of antibiotics so analgesics aren't so much of an issue), but next time I travel I might see about getting hold of something stronger.
Never considered the possible treatment of animals. Good point. I don't have much experience with dealing with that sort of thing so good tip with the spray, I'll have to get me one of those.
Also good idea about removing the tweezers and scissors. Previously I've always put it in the hold and hadn't really thought about it that way, which is probably a bit short sighted. Actually the simplest method would be to put the tweezers and scissors in the sterile syringe module (which detaches from the main module), and place that module in the hold and then I can keep the rest with me. Thanks for the idea!