1.What is the Warrant Law and what is its function? (1) What is Warfarin? Warfarin is an anticoagulant, which means it stops the blood from clotting. Anticoagulants prevent the formation of blood clots in the blood vessels (2) Why do I need Warfarin? Your doctor recommended Warfarin because you may have clots forming in your body that are not good for you. These clots can move inside your blood vessels, and this movement can sometimes have serious consequences, such as a stroke if it moves into the brain. (3) How does Warfarin work? Warfarin works by reducing the likelihood of blood clots forming in the body, and it prevents the formation of harmful blood clots. 2. How do I use Warfarin? (1) How much Warfarin should I take? Your doctor will test your blood to determine the amount of Warfarin you should take. This test is called a prothrombin time measurement. The dose you take will be determined by the results of this test, so you must take the correct daily dose. (2) When should I take Warfarin each day? It is best to take the medication at a regular time of day or as recommended by your doctor. (3) Will the dose I take change? The dose you take will change depending on the results of blood tests, so be sure to follow your doctor’s instructions. 3.Prothrombin time measurement (1) Why do I need a blood test? This blood test, also known as a prothrombin time measurement, is an indication of how long it takes for your blood to clot, so it is very important for your doctor to adjust your dose. Prothrombin time is usually expressed by its standardized expression, the International Normalized Ratio (INR). (2) When do I have to have blood tests? These tests will help your doctor to adjust your dosage, and once your dosage has been determined, you will not need to have them as often. (3) What can affect the test results? You should keep your doctor informed of any of the above so that he or she can determine if the dosage of Warfarin needs to be adjusted. 4. Your diet and vitamin K (1) Why do I need to pay attention to my diet? Because many of the foods we normally consume contain vitamin K, which is known to promote blood clotting. (2) Why do I need to have a stable diet every day? Because large variations in daily intake of vitamin K can affect the efficacy of Warfarin. So maintaining a stable daily diet ensures a constant daily intake of the vitamin. If you want to change your diet, please tell your doctor. (3) Should I avoid foods that are rich in vitamin K? No. All you need to do is maintain a balanced diet. Many foods rich in vitamin K, such as green leafy vegetables and some legumes, are extremely nutritious. (4) Do cooking, refrigeration or drying processes affect the amount of vitamin K in foods? There is very little information on this, and the current opinion is that there is no significant change in vitamin K levels.