Iron Thiamine Mononitrate

Iron thiamine mononitrate is a combination of iron and thiamine, a B vitamin also known as vitamin B1. It is typically produced by combining iron salts with thiamine mononitrate, which is itself synthesized from chemical precursors. This compound is used to fortify foods with both iron and thiamine.

Manufacturers add iron thiamine mononitrate to foods to increase their nutritional value by adding iron and thiamine. It is commonly found in enriched grain products like breads, cereals, and pasta, as well as in some baked goods and nutritional supplements. Its primary function is as a nutrient.

In the U.S., iron thiamine mononitrate is generally recognized as safe (GRAS) when used as a nutrient supplement in food. Both iron and thiamine are essential nutrients. JECFA has evaluated thiamine and established an acceptable daily intake. Iron is also essential, and excessive intake can be harmful. The U.S. National Academies have established upper intake levels for iron. Typical levels added to food are not expected to cause adverse effects.