To be honest I'm not very knowledgeable about natural medicines however I think you're both right; Antiseptic is very important. I mean, a bandage can be torn from clothing if required, splints can be made from whatever, I always carry a knife so yeah... Antiseptic is probably what I'd say. There are loads of important items though.
First aid kit for the car is important. Glass breaker and seat belt cutter too...Especially for those of us who off-road.
Oh those are two things I wouldn't have thought of! Thanks!
All good. Happy to be of assistance.