What should you know about black fluffy stool?

Fluffy may mean the stool is loose, soft, or broken into pieces. That texture can follow a change in diet, faster movement through the bowel, or extra gas. A dark colour can follow iron, bismuth, or strongly coloured foods. These explanations cannot be confirmed from appearance alone.

Black, sticky, tar-like stool is different from ordinary dark stool because digestive juices can turn blood black as it passes through the upper gut. It may occur with [Gastritis](/conditions/gastritis/), a [Peptic Ulcer](/conditions/peptic-ulcer/), or inflammation associated with [Helicobacter Pylori Infection](/conditions/helicobacter-pylori-infection/).

Check the colour in good light and note the texture, smell, frequency, and timing. Write down recent foods, iron or bismuth products, supplements, anti-inflammatory pain medicines, and blood thinners. Drink fluids if stools are loose. Arrange medical advice when the cause is uncertain, the stool stays black, or bowel symptoms are worsening.

Do not self-treat suspected bleeding or stop a prescribed blood thinner on your own. A clinician may need to review your medicines and decide whether examination or testing is appropriate.

Seek emergency care if black stool occurs with fainting, marked dizziness, unusual weakness, pale or clammy skin, severe abdominal pain, vomiting blood, or coffee-ground vomit. Repeated tarry stools need prompt assessment even if you feel relatively well, because blood loss may begin quietly.

Ask whether the colour fits a food or medicine effect, whether you need evaluation for digestive bleeding, and whether testing for Helicobacter pylori is relevant. Share a complete medicine list and describe any pain, nausea, vomiting, dizziness, or change in bowel pattern.