I helped with some of the field tests/studies of early QuikClot powder and even then the exothermic reaction was apparent but the alternative of bleeding to death outweighed those concerns. With more modern alternatives like Combat Gauze (I really like the idea of the medium mixed with the bandage) and kaolin those aren't even a concern any more.
If there is nothing else available, use the QuikClot, if you're investing in new kit, then get something a bit more modern.
It is bad policy to fear the resentment of an enemy. -Ethan Allen
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