Policy Possible Causes What causes melena (black stool)? Melena comes from bleeding in your upper GI tract — usually your stomach or the upper part of your small intestine
Metronidazole oral tablets and capsules have a black box warning
Black stools caused by these kinds of upper GI issues are sometimes referred to as melena
Along with its needed effects, a medicine may cause some unwanted effects
It may also make your stools (bowel movements) black
Black, tarry stools; blood in the urine; body aches or pain; burning while urinating; chills; clumsiness or unsteadiness; difficulty with breathing; ear congestion;
These side effects aren't harmful and usually go away on their own a few days after stopping the medication
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constipation Bismuth subcitrate may cause your tongue to become a darker color or even black
Flagyl and black stool
A few of these conditions include: gastritis
Other side effects not listed may also occur in some patients
A few of the more common causes of black dog poop are cancer, foreign bodies, parasites, and viral or bacterial pathogens, Dr
Blemishes on the skin
If you notice any other effects, check with your healthcare professional
Dr
Created for people with ongoing healthcare needs but benefits everyone
Bismuth, metronidazole, and tetracycline may cause side effects
However, after a bout of diarrhea, which is often why metronidazole was prescribed in the first place, it is Black poop doesn’t always mean there is an underlying medical concern
Flagyl is the brand name for Metronidazole, an antibiotic
The medical name is "melena" (suggest to look it up in a medical dictionary or website to find out more details of causes etc)
Normal stool color is brown
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But, you are probably not taking either? Last edited by Harry; 11-04-2006 at 11:13 PM