Nicoumalonee 4mg Tablet is a type of medicine known as an anticoagulant. Although it does not âdissolveâ blood clots, it can prevent them from getting bigger so your body can dissolve them over time. It will also prevent new ones from forming. It works by blocking a substance in the body which is involved in blood clotting. This keeps your blood flowing freely around your body and makes it less likely that a clot will form inside a blood vessel. This can help prevent or reduce damage caused by stroke, clots in your lungs (pulmonary embolism), or other blood vessels (thrombosis). It can also make it less likely that parts of a clot will break off and travel to other parts of the body. You should take it regularly and make appropriate lifestyle changes to help this medicine be effective.