2 doctors weighed in:

What nutrients or minerals are in mustard?

2 doctors weighed in
Dr. Steven Charlap
Holistic Medicine
1 doctor agrees

In brief: Several

Yellow prepared mustard is a good source of dietary fiber, iron, magnesium and phosphorus, and a very good source of thiamin, manganese and selenium.
Be careful because it also contains a lot of sodium (like in salt) read more http://nutritiondata.Self.Com/facts/spices-and-herbs/215/2#ixzz20bcyi422.

In brief: Several

Yellow prepared mustard is a good source of dietary fiber, iron, magnesium and phosphorus, and a very good source of thiamin, manganese and selenium.
Be careful because it also contains a lot of sodium (like in salt) read more http://nutritiondata.Self.Com/facts/spices-and-herbs/215/2#ixzz20bcyi422.
Dr. Steven Charlap
Dr. Steven Charlap
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