What should you know about black dry stool?

Dry, hard stool often points toward constipation, especially when bowel movements are infrequent or require straining. Black colour can also follow iron-containing products or strongly coloured foods. Melena, or bleeding higher in the digestive tract, is often black, sticky or tar-like and may have an unusually strong smell.

Black stool is a symptom, not a diagnosis. Conditions such as Gastritis, Helicobacter Pylori Infection and Peptic Ulcer can affect the stomach or upper digestive tract and may bleed. The appearance, accompanying symptoms and medicines you take all matter.

If the stool is simply hard and you otherwise feel well, drink fluids regularly, increase fibre gradually through foods, and keep gently active. Avoid repeatedly taking laxatives without guidance. Note any iron, bismuth or other products that could darken stool, and record whether the colour changes after stopping a non-essential product with a pharmacist's advice.

Contact a clinician promptly if black stool is new, persists, recurs, or cannot be explained by something you have taken or eaten. Do not stop prescribed medicine without discussing it.

Get urgent medical help for black tarry stool with dizziness, fainting, weakness, shortness of breath, vomiting blood or material like coffee grounds, severe abdominal pain, confusion or a fast heartbeat. These combinations can indicate significant digestive bleeding and need immediate assessment.

Tell your doctor when the change began, whether the stool is sticky or difficult to flush, and what medicines or supplements you use. Ask whether you need an examination, blood testing or further digestive assessment, and what symptoms should prompt emergency care.