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One shot with an epipen is rarely enough, when it wears off you're back in the same position again so it's well worth taking in some ampules and syringe as well to last until help can arrive or you...

Trademe has them, you can get it in an syringe type applicator which would be far better for getting it down into a wound I think, epecially if self applicating.

If you're going to carry a CAT...

Never used it in a real life situation so don't know. Used the Israeli Bandages with it infused and it worked really well, would never stop a serious arterial bleed though.

CAT tourniquet, Israeli Bandage, Chest seal, celox and some wound packer. Yet to get a PLB but will do. Takes up very little room and can deal with most trauma until serious help arrives.