Not everyone carries the same risk of developing deep vein thrombosis. For example, those who have diabetes, cardiac insufficiency, varicose veins or are overweight carry a much higher risk of developing the condition. Pregnant women and people over the age of 60 also have an increased risk of developing DVT, especially during long periods of travel. If you believe you are at risk of developing DVT, you should visit a doctor before traveling for his or her advice. He or she may decide to prescribe an anticoagulant or blood thinning medication to help reduce the risk of blood clots forming in your legs.
Note: Most medications that help DVT need several days to take effect and therefore need to be taken 2 to 3 days prior to departure.