NUPARIN 1000IU INJECTION is an anticoagulant which prevents abnormal clotting of blood. It not only prevents the formation of harmful blood clots in the legs, lungs, and heart but also stops them from growing bigger. NUPARIN 1000IU INJECTION is administered under the supervision of a doctor. Your doctor will decide how often you should take this medicine. This may change from time to time depending on how well it is working. You should take this medicine regularly to get the most benefit, even if you feel fine. It is preventing future harm. Your doctor may get regular blood tests done to make sure this medicine is working well and monitor the levels of potassium and platelets. Use of this medicine may increase your risk of bleeding. Let your doctor know immediately if you see pinpoint rash or blood in your vomits, urine, or stool. You should be careful while shaving, cutting nails, using sharp objects, or engaging in contact sports. Before you use this medicine, let your doctor know if you have any preexisting medical conditions. Let your doctor also know about all the medicines you are taking. In case of pregnancy, consult your doctor if it is safe to use this medicine.