Is it dangerous for people with stomach ulcers to pass black stools?

Question
Hello doctor,
I am 22 years old this year, I have a stomach ulcer for a long time. This time it hurt again, I went back to the doctor and bought medicine to take. But when I take the medicine, I always have black stools, so is it dangerous for people with stomach ulcers to have black stools? I would like to thank you.
Anonymous customer
Answer
Answered by BSCK II Nguyen Van Nghia - Department of General Surgery, Vinmec Central Park International General Hospital.
Hello,
With the question “Is it dangerous for people with stomach ulcers to pass black stools? ", the doctor answered as follows:
Stomach ulcer is a fairly common upper gastrointestinal disease today. This disease is not dangerous but affects daily activities. Causes of stomach ulcers are often many, such as infection with Helicobacter Pylori bacteria, prolonged use of non-steroidal anti-inflammatory drugs (NSAIDs), increased gastric acid secretion, Zollinger-Ellison syndrome, lifestyle, etc.
Therefore, you should see a specialist in Gastroenterology for examination and diagnosis when having black stools, treatment advice and specific monitoring.
If you still have questions about people with stomach ulcers passing black stools, you can go to a medical facility under Vinmec Health System for early examination and treatment. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!