- Anticoagulants such as Coumadin (Warfarin), Dicumarol, Plavix (Clopidrogel), low-molecular weight Heparin, Lovenox (Enoxaparin), or Dabigatran (Pradaxa), aspirin, and Non-steroidal Anti-Inflammatory Drugs (NSAIDs) within 2 weeks prior to entry.