Psyllium

Black psyllium comes from the seed husks of the Plantago arenaria plant. It contains high amounts of soluble dietary fiber.

Black psyllium adds bulk to the stool which might help with constipation, diarrhea, and irritable bowel syndrome (IBS). It also controls how quickly sugars are absorbed from the gut, which might help control blood sugar levels in people with diabetes.

People commonly use black psyllium for treating and preventing constipation. It is also used for diarrhea, obesity, diabetes, high blood pressure, and many other conditions