Coumadin for a recurrent deep vein thrombosis (DVT)?

Sounds like a homework question to me. Coumadin is an anticoagulant. Aspirin is also an anticoagulant. A therapeutic dose of Coumadin is very close to the level where the blood does not clot at all. Taking aspirin on top of Coumadin MIGHT - MIGHT - trigger uncontrolled bleeding.