What are the side effects of mustard seeds?

The mustard seed is a very common ingredient of spice, and everybody has it in their kitchen. Eating mustard seeds, mustered leaves, or paste, is generally considered safe for most people.
It is especially harmful when consumed in amounts typically in an average person’s diet. That said, consuming large quantities, such as those commonly found in mustard extracts, can cause abdominal pain, vomiting, diarrhea, and intestinal inflammation.