Hemostatic agents are unnecessary and delay the action that actually stops bleeding, i.e. direct pressure. All of the agents require direct pressure to be effective, and the pressure works without them. I know 99 of 100 combat medics will swear by the stuff, but the primary utility of QwikClot is to separate people (and of course deep-pocketed government agencies) from their money.
My opinion is heavily influenced by Doc Gunn, which I freely admit. He's got a couple of decades as a board-certified ER/trauma physician and he was trained and mentored in tactical medicine by the late SGM Chris Dwiggins (if you know combat medicine, you know that name). Until last year, he never even needed a tourniquet because he'd stopped bleeding with direct pressure every other time (when it was possible to stop the bleeding; some people you can't save). The one case where he's used a tourniquet was after he'd gotten the bleeding stopped with pressure, but the surgeons delayed surgery too long.
If you must use a hemostatic (and I say "must" with the implicit "to make yourself feel better"), Celox is preferred. It's less likely to do harm from heat or allergic reaction.
Direct Pressure and elevation are the keys.
End of ranting.
Pretty much what was learned in the Boy Scouts. I've used that concept a few times, once on someone that was in a car accident. Stopped the really bad bleeding. Paramedics showed up, threw some of the clotting fo fo on, then it bled like crazy. So much for that....
Pressure and elevation...Keys to success.
