Some supplements, like chondroitin, fish oil, and iron, may lead to unwanted side effects, including smelly stool (poop). Chondroitin and glucosamine are chemicals naturally found in cartilage ...

Pebble poop is poop appearing as small, hard, separate lumps. It can also appear as a solid piece that looks as though it consists of pebbles. Both types are a sign of constipation. Constipation ...