Open search bar Open navigation Submit search. Treatments and tests. Facebook Youtube Twitter. Home Treatments and tests Warfarin and risk of bleeding. Warfarin and risk of bleeding Bleeding is the most common side effect of taking warfarin. Other things you need to do to reduce the risk of harm from bleeding include: knowing what to do if bleeding starts telling your doctor or dentist that you take warfarin well before any procedure or surgery avoiding activities and sport that might cause you serious injuries.
Signs and symptoms Contact your doctor right away if you have any signs or symptoms of unusual bleeding. This can include: bleeding that takes a long time to stop this includes nose bleeds, bleeding from your gums, bleeding from cuts and scrapes and menstrual periods severe unexplained bruising, or bruising that gets bigger red or dark coloured urine red or black bowel motions coughing blood dark or blood-stained vomit severe headache or dizziness new pain, swelling or discomfort.
What will my doctor do? Depending on your symptoms your doctor will do 1 or more of the following: order a blood test reduce your doses of warfarin stop you from taking warfarin for a few days give you a vitamin K injection to slow down the bleeding. Medical and dental procedures Bleeding from medical or dental procedures may be increased with warfarin. Avoiding injuries Contact your doctor for advice before starting any activity that may cause injury. What can I do?
It is best to avoid activities that might cause injuries associated with bleeding. What are side effects of warfarin? Signs of bleeding or a high INR: Bleeding from cuts that do not stop Nosebleeds that do not stop Gums bleed when you brush your teeth Coughing up blood Vomit throw-up that looks like coffee grounds Bruising for unknown reasons Heavy periods or unexpected bleeding from the vagina Bowel movements poop that looks black or have blood in them Rust-colored or dark brown urine pee Bleeding in the eye Getting a sudden headache, dizziness, or weakness Call your health-care provider if you get these signs: Fever and chills for more than two days A stomach ache or diarrhea for more than two days Bad stomach aches, stomach pain, or belly swelling Bad headache Skin rash, hives, or itching Very rare, but serious, side effects are skin necrosis death of skin tissue and purple toe syndrome.
What are signs of a blood clot? Call your health-care provider if you have: Painful and constant swelling or redness in your feet, lower legs, or arms Bad headache Blurred vision Dizziness Trouble breathing Chest pain Feelings of severe weakness Numbness or tingling of hands, feet, or face Not being able to move Sudden confusion.
It's important to understand the role of vitamin K in warfarin treatment and a healthy diet. Warfarin works by disrupting the role of vitamin K in a complex series of molecular events that cause blood clotting. But vitamin K is a nutrient essential for heart and bone health. Foods rich in vitamin K are green vegetables, including lettuce, spinach and broccoli.
If you are taking warfarin, the amount of vitamin K in your diet may affect how well the medicine works. If you take warfarin, it's important to have a consistent amount of vitamin K in your diet. Too little vitamin K can increase your risk of bleeding. Too much vitamin K can decrease warfarin's anti-clotting ability. Talk to your doctor about healthy choices you can make to get an adequate and consistent supply of vitamin K.
If you miss a dose, take it as soon as you remember. If you don't remember until the next day, call your doctor for instructions. If your doctor isn't available, skip the missed dose and resume your normal dosing schedule. Never take a double dose. If you follow your doctor's dosing instructions and tell all your health care providers that you take warfarin, you'll be at a much lower risk of dangerous interactions and side effects.
Talk to your doctor, nurse or pharmacist if you have any concerns about warfarin. There is a problem with information submitted for this request. Sign up for free, and stay up-to-date on research advancements, health tips and current health topics, like COVID, plus expert advice on managing your health. Error Email field is required.
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You may opt-out of e-mail communications at any time by clicking on the Unsubscribe link in the e-mail. Warfarin is one medication prescribed to people who are at higher risks of forming dangerous blood clots. While general blood clotting is good, helping the body to prevent or stop bleeding, harmful blood clots can cause heart attacks, stroke, deep vein thrombosis or pulmonary embolism.
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