Warfarin is a medication in a class of drugs known as anticoagulants. It works by lessening the body's formation of blood clots. According to Drugs.com, warfarin is used to prevent heart attacks, strokes, blood clots in veins, arteries and lungs, and for the treatment and prevention of clots associated with atrial fibrillation and valve replacement. Warfarin is available by prescription only and comes in pill form.
Stomach Discomfort
Warfarin may cause stomach discomfort. Symptoms can include stomach pain, nausea, vomiting, gas and bloating. These side effects may lessen over time as the body adjusts to warfarin therapy. Eating a bland diet and having smaller meals more frequently may help alleviate gastrointestinal discomfort. Severe vomiting should be promptly reported to a physician. It can lead to dehydration, which may cause additional complications.
Increased Bleeding
According to MedlinePlus, warfarin prevents blood from clotting so it may take longer than usual for a patient to stop bleeding if he is cut or injured. Patients may notice that they bruise more easily and bleed for a longer period of time following a minor injury. Due to the increased risk of bleeding while taking warfarin, patients should refrain from activities that can result in injury. It is important for patients to tell their physicians that they are taking warfarin prior to any type of surgical procedure or dental work. The patient may be recommended to abstain from the medication for several days prior to surgery to reduce the risk of hemorrhage.
Chills and Pale Skin
Patients taking warfarin may experience chills and pale skin. Keeping warm with additional layers of clothing may be helpful. Those who experience skin changes or discoloration anywhere on the body should seek medical attention, says Drugs.com.
Severe Reaction
In rare cases, a patient may experience a severe reaction to warfarin. Symptoms can include rash, hives, difficulty breathing and swelling of the tongue or throat, reports MedlinePlus. Additional symptoms to be aware of include blood in the urine or stool, vomit that contains blood, yellowing of the skin or white part of the eyes, and swelling of the extremities. These symptoms should be brought to the immediate attention of a physician.
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