Final answer:
Anticoagulant drugs work by inhibiting clotting factors to prevent clot formation.
Step-by-step explanation:
The mechanism of action of anticoagulant drugs is to inhibit clotting factors to prevent clot formation. Anticoagulants are substances that oppose coagulation and play a role in limiting the extent and duration of clotting. By inhibiting clotting factors, anticoagulant drugs prevent the formation of blood clots.