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Doctor insights on: Black Stool And Dizziness

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I'm having hard dark brown almost black stools. No dizziness or elevated heart rate. No stomach pain. On coumadin (warfarin). Could it be internal bleeding?

I'm having hard dark brown almost black stools. No dizziness or elevated heart rate. No stomach pain. On coumadin (warfarin). Could it be internal bleeding?

Could be bleeding...: Coumadin (warfarin) is a powerful blood thinner. If the blood is thin enough, abnormal sites in the upper intestine can bleed and cause black stool or melena. Rapid pulse and dizziness might not occur, and there is seldom any pain. Immediate blood testing and a doctor's examination are essential! You should call your doctor now! Good luck! ...Read more

Dr. Jan Lei Iwata
347 doctors shared insights

Melena (Definition)

Melina is blood in the stool that is black, tarry, sticky, and smelly. The blood in melena comes from high up in the gastrointestinal tract, and gets partially digested which is why it changes to melena. Bright red blood comes from lower ...Read more


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On iron for 6 weeks 325mg x2 for iron deficient anemia; hemoglobin was 12.4 but dropped to 10.2 had black tary stool dizziness could I be bleeding?

On iron for 6 weeks 325mg x2 for iron deficient anemia; hemoglobin was 12.4 but dropped to 10.2 had black tary stool dizziness could I be bleeding?

Yes: A drop in hemoglobin from 12.4 6 weeks ago to 10.2 now in spite of iron supplementation, coupled with black tarry stools and dizziness, suggests ongoing blood loss and warrants an urgent evaluation. I recommend you arrange evaluation within the next day or two. If necessary, go to the ER. ...Read more

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I have had nausea and black stools for 2 days now no pain at all just dizziness and weakness??/

I have had nausea and black stools for 2 days now no pain at all just dizziness and weakness??/

Black stools: Black stools often are present when there is bleeding from the stomach or upper gastrointestinal tract. They also occur while taking iron supplements or peptobismol. I recommend that you see your physician who will perform a simple stool test checking for evidence of blood in your stool. Of course if profuse passing of black, tarry stools and weakness occur, proceed to the hospital emergency room. ...Read more

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HelloHello doctor, please does diarrhea cause you to stool black watery, dizzy and vomiting?

HelloHello doctor, please does diarrhea cause you to stool black watery, dizzy and vomiting?

Could be: Black could be bleeding or Pepto-Bismol. If you loose enough fluid from diahrrea and/or vomiting you can become dehydrated and get dizzy. You should see your doc right away for an evaluation. ...Read more

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Hello every morning I wake up I feel dizzy and I have bittry mouth. I have low iron 6. I have hard time going to the washroom and my stool is black.?

Hello every morning I wake up I feel dizzy and I have bittry mouth. I have low iron 6. I have hard time going to the washroom and my stool is black.?

Ulcer: You may have an ulcer or esophagitis causing the symptoms you describe. I would see a GI specialist asap as you can be internally bleeding and be at high risk for severe blood loss. ...Read more

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Having constant stomach cramps after eating with nausea and dizziness. Stomach pain is on right side. Moving hurts and no appetite plus black stools.

Black stools: Truly black, tarry stools (melena) are a worrying sign of bleeding in the upper GI tract. It sounds as if you might have an ulcer or esophagitis. You should be evaluated ASAP. ...Read more

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Could it be something bad if I have black stools?

Could it be something bad if I have black stools?

Possibly: Black stools can indicate bleeding from the gastrointestinal (GI) tract. It may represent blood that has been digested, turning the stool into a characteristic black, tarry stool. This may be from a stomach or duodenal ulcer. Medications can also turn the stool black, such as iron supplements and pepto-bismol. Should see your doctor. ...Read more

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Might eating oreos cause you to have black stools?

Might eating oreos cause you to have black stools?

No: If you have black, tarry malodorous stool please seek prompt medical attention for possible GI bleeding. ...Read more

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I have had black stools for the passed 8 weeks, what could be wrong?

I have had black stools for the passed 8 weeks, what could be wrong?

Possible melena: It could be a reaction to medication. However, if it is black, sticky and foul smelling it could be due to gastrointestinal bleeding. That requires prompt medical eval. ...Read more

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Is occassional black stool common?

Is occassional black stool common?

Black=blood.: While very few dietary ingredients and supplements can cause black stool, the finding of black stool should not be considered common, and could suggest bleeding from an upper gastrointestinal source. If it's common, then it should be investigated. Could be gastritis or an ulcer, for example. ...Read more

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What should I do if I have black stool?

What should I do if I have black stool?

Black stool: Take no blood thinner, plavix, (clopidogrel) Aspirin and see your docotr asap to rule out bleeding. Did you eat beets? ...Read more

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What is the reason for having black stools?

What is the reason for having black stools?

Possibly melena: Dark-colored stools may result from iron supplements, foods you eat (like a lot of spinach), substances (like peptobismol), but most significantly suggests bleeding. When blood is denatured by acid in your stomach, as from ulcers, stools will turn tarry ("melena"). Blood may also be ingested from nose bleeds, bleeding gums... Persistent melena (without obvious cause) & symptoms warrants md visit. ...Read more

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Black stool, is it really black or just dark?

Black stool, is it really black or just dark?

Melena = black: When concerned about melena from GI blood loss, the stool is tarry black. If concerned ask your doctor to check your stool for blood. ...Read more

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Gi contrast cause dark black stool?

Please talk to your: Dr. I don't believe that barium contains bismuth or iron which could cause stool to become black. If the bowel movements are black., sticky & malodorous — this could be due to a GI bleed & would require prompt medical evaluation. Take care. ...Read more

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Is black stool after colonoscopy normal?

Is black stool after colonoscopy normal?

Probably not, but...: Melena is dark stools stained with denatured blood, but all dark stool is not melena. False positive hemoccult results can occur based on diet ; stool additives. However, colonoscopy can result in bleeding due to biopsies, scope abrasion/trauma, post-polypectomy oozing, etc. By all means, call your colonoscopist now ; alert them to your concern--they know your risks ; will be eager to assist you. ...Read more

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Black stools and green urine. Is this serious?

Could be: Neither is normal. Black stools can be due to pepto bismol (bismuth subsalicylate) use or from blood arising from a source in your stomach. Green urine could be the result of some food coloring agents or medications/vitamins you are taking. Either way they should be investigated for underlying causes. ...Read more

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I have had heavy bladder n black stool for a week?

I have had heavy bladder n black stool for a week?

GI BLEED: I'm not sure what you mean by "heavy bladder, " but black stool can be a sign of bleeding from higher up in the GI tract, such as stomach, small bowel, or proximal colon. Some medicinal products, such as iron supplements or pepto-bismol can darken the stools as well. You need to make an appointment with your medical doctor. Good luck. ...Read more

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What foods can cause black stool (i have gastritis)?

Contact doc now: While some foods are produce a black stool, this is often a sign that you are bleeding from the stomach or intestine. See your doctor immediately for testing. ...Read more

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I have had black stool and heavy bladder for a week?

See a doctor: A black stool is often a sign of blood in the stool and is not normal. It can also be seen in people who take iron supplements. If you are not taking iron supplements, you should really see a doctor and get checked out. Do not wait; see a doctor this week. ...Read more

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Black stool with orange cloud. What could this mean?

Black stool : Regardless of what color cloud is needs workup. Most commonly it's related to an upper GI bleed. You will need a full history to assess other symptoms and then workup. Please see a GI doctor. ...Read more

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Black stools and bad taste? Is it because of smoking?

Black stools and bad taste? Is it because of smoking?

Black Stool: Are you taking iron supplements or meds with bismuth? If it is black, tarry and has a foul odor then this could be melena (gi bleed). That would require prompt medical evaluation. ...Read more

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I have black stool, should I go to doctors, what to do?

Stool can become: Black if one is taking iron or medications containing bismuth. Gi bleeding (melena) can cause black, tarry and malodorous stools. A stool guiac can determine if there is blood in stool. I would get it checked. ...Read more

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Is a colonoscopy necessary when someone has black stool?

Black Stool: Pepto Bismol (bismuth subsalicylate) causes your stool to be black. It really depends on your history of what is going on. If someone does have black stool and they did not just take pepto bismol (bismuth subsalicylate) for instance, they should see their doctor for a consultation to determine what is appropriate to do next. ...Read more

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Is tarred, black stools what happens with celiac disease?

Unusual: This often means bleeding in the intestines. See a doctor immediately. ...Read more

Stool Is Black (Definition)

Stool is black is a symptom in which there is black, reddish-black, or very dark coloring to stools. Black stools can be due to old blood in the stools ...Read more


Dr. Dariush Saghafi
3,767 doctors shared insights

Dizziness (Definition)

Dizziness is a feeling of light headedness that includes loss of balance, vertigo, or the feeling as ...Read more