This topic is about someone experiencing persistent black, watery stool and low sodium levels. They have already seen a general practitioner (GP) who suggested eating salty foods due to low sodium but did not address the black diarrhea. The person is looking for advice and experiences from others, as seeing a gastroenterologist in Canada could take a long time.

Here are some helpful insights and advice:

1. Insist that your GP investigates the black watery stool directly. As a patient, you have the right to demand answers and appropriate testing.

2. Black, tarry stool can be a sign of gastrointestinal bleeding, which is potentially urgent and needs immediate medical attention rather than waiting months for a specialist.

3. If your GP is unresponsive, consider going to an Emergency Room or urgent-care facility, as care is often faster when accessed through the ER.

4. Iron supplements or multivitamins containing iron can darken stool. They can also cause constipation, and diarrhea may "leak" around an impaction. Even so, this condition should be evaluated promptly to rule out bleeding.

5. For quick, authoritative information on diarrhea and its causes, you can visit the U.S. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) patient page online.

6. A reminder from another person who confirmed that black stool linked to iron intake is something they also experience when taking iron tablets.