The mechanism of action of 3 Factor PCC in toxicology revolves around rapidly replenishing deficient clotting factors in the blood. This is particularly vital in cases of anticoagulant toxicity, where the body's natural ability to form blood clots is impaired. By introducing concentrated levels of factors II, IX, and X, 3 Factor PCC effectively counteracts the anticoagulant effect, thereby stabilizing bleeding and reducing the risk of severe hemorrhagic events.