Doctors generally use anticoagulant medications such as warfarin (Coumadin, Jantoven), Heparin or low molecular weight heparin to treat those who develop blood clots.
• Heparin: Works more quickly than warfarin does and it can be administered directly into a vein (intravenously) or under the skin (subcutaneously). You may inject yourself with some forms of heparin including enoxaparin and dalteparin. Heparin is safe to take during pregnancy.
• Warfarin (Coumadin, Jantoven): This anticoagulant comes in a pill form so it’s easier to take than heparin. Warfarin may cause birth defects so it may usually not be recommended during pregnancy especially during the first trimester. Bleeding is the most common side effect of warfarin.
If you are taking an anticoagulant medication that increases the risk of excessive bleeding your doctor will follow you closely. Frequent blood tests may be done to help your doctor make sure your blood is capable of clotting enough to stop bleeding if you bruise or cut