Serious Side Effects Of Blood Thinners

Blood In Urine Or Stool

Blood in the urine or stool is a potentially serious side effect of blood thinners. It is a sign of excessive bleeding, and patients should seek immediate medical attention if they experience this side effect. When blood is present in the urine, it might appear red or brown. Blood in the stool typically makes the stool appear red or black, and patients might also see drops of blood on the toilet paper or in the toilet bowl after having a bowel movement. To investigate blood in the urine or stool, doctors will order blood tests, and it may be necessary to take urine or stool samples and do a rectal exam. If doctors determine the symptoms are caused by the patient's medication, this may be stopped temporarily until symptoms resolve. The patient may also be switched to a different blood thinner to see if it does not cause this side effect.

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