Overview
Iron and bismuth (Pepto-Bismol) can turn stool black without bleeding.
Slow bleeding can show only as tiredness from anemia.
Symptoms
Common signs:
- Vomiting blood or black stools
- Black or tarry stool
Less common
- Dizziness
- Weakness
- Pale skin
When to get medical care
Causes
Ulcers, NSAIDs, varices, polyps, hemorrhoids.
Does it spread or run in families?
- It isn't contagious. You can't catch it from someone else.
Who is more likely to get it
- NSAIDs
- Blood thinners
- Liver disease
Possible complications
Diagnosis
Doctors find and stop the bleeding.
Questions you may be asked
- NSAIDs, blood thinners, alcohol, liver disease
The exam
Vital signs and belly exam.
Tests
Tests, if needed:
- Blood count:
- Endoscopy or colonoscopy:
Treatment
Get care fast.
Self-care
- Don't eat or drink until seen
- Bring your medicine list
Medicines
Medicines that may help:
| Medicine | Helps with | Good to know |
|---|---|---|
| Acid reducers (IV) | Ulcer bleeding | Given in hospital. |
OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.
Prevention
To lower risk:
- Limit NSAIDs
- Limit alcohol
Which doctor treats this
- Emergency doctors treat it first, in the ER.
- They may send you to a gastroenterologist (stomach and gut doctor).
Back to school, work, or sports
- Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.
Pregnancy and breastfeeding
- If you're pregnant or planning to be, tell your prenatal provider about this condition.
- Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
- Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
- Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.
For caregivers
- Go to visits when you can and take notes.
- Keep a list of medicines, allergies, and doctors in one place.
- Learn the warning signs that need fast care.
- Learn CPR. Many hospitals and the Red Cross offer classes.
- Take breaks and ask for help. Caregivers need care too.
Outlook
Most bleeding can be stopped.
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Sources
Last updated 2026-11-12.