Coumadin is a blood thinner that prevents clots in the heart and in the blood vessels. When blood clots occur, an individual is more at risk for heart attacks and strokes. Known generically as wayfarin, Coumadin is given to patients with blood clots, who are at high risk of forming blood clots in the heart or who have a mechanical artificial heart valve. According to the Agency for Healthcare Research Quality, blood thinner drugs such as Coumadin should be taken exactly as directed to reduce the risks of side effects.
Severe Bleeding
According to MayoClinic.com, severe bleeding is a serious side-effect of Coumadin that requires immediate medical attention. This could be in the form of menstrual bleeding that is heavier than normal, bleeding from the rectum or black-colored stools, red or brown urine, a cut that refuses to stop bleeding, bruising that appears without any reason and vomiting or coughing up blood.
Skin Conditions
According to MayoClinic.com, skin conditions such as hives, rash or itching are also effects of Coumadin that cannot be ignored. Skin tissue death, or necrosis, and gangrene may also occur due to Coumadin. This may occur around three to eight days after taking Coumadin and may even require amputation of the affected part. Changes in skin color or temperature, sores on the skin or severe pain on the skin could be effects of the drug and should be reported to the physician.
Swelling, Aches and Abnormal Sensations
According to MayoClinic.com, swelling, aches and loss of sensations are also effects of Coumadin which should be reported to the treating physician. Aches can occur in muscles and joints. Coumadin may lead to swelling on the face, throat, mouth, hands, legs or feet and difficulty moving. The patient may also experience abnormal sensations or loss of sensation in various parts of the body. These sensations can be in the form of numbness, tingling, pricking, burning or something creeping on the skin.
