Medications Affect the Clotting Process Aspirin. Clopidogrel (Plavix) Dipyridamole (Persantine) Prasugrel (Effient) Ticagrelor (Brilinta) Ticlopidine (Ticlid) Can medication cause DVT? Certain medications (eg, birth control pills, hormone replacement therapy, tamoxifen, thalidomide, erythropoietin). The risk of a blood clot is further increased in people who use one of these medications andRead More →