Ferrous fumarate is a form of iron that is often used as a dietary supplement to treat iron deficiency anemia. It is commonly found in multivitamin supplements, as well as in protein powders that are marketed towards individuals with increased iron needs, such as athletes or individuals with certain medical conditions.
In protein powders, ferrous fumarate may be added as a source of iron, which is an essential mineral that plays a critical role in the formation of red blood cells and the transport of oxygen throughout the body. Iron is particularly important for athletes and active individuals, as it helps to support energy metabolism and can help to prevent fatigue and muscle weakness.
Ferrous fumarate is generally considered safe when consumed in recommended amounts. However, it can cause digestive side effects, such as constipation, nausea, and stomach pain, particularly when consumed in large amounts. Individuals with certain medical conditions, such as hemochromatosis or thalassemia, may need to be cautious when consuming iron supplements, as excessive iron intake can be harmful.