Ferrous fumarate and folic acid is a combination medicine used to treat or prevent certain types of anemia (low red blood cells) caused by an iron or folate deficiency. Of course, Iron is an important mineral that the body needs, considering one of its main roles is to help our red blood cells transport oxygen to all parts of the body. Iron also plays an important role in specific processes within the cell that produce the energy for our body. It is for this reason that one of the first symptoms of low body iron stores is tiredness and fatigue. Bear in mind that you should not use ferrous fumarate and folic acid if you are allergic to ferrous fumarate or folic acid, or if you have Iron overload symptom, pernicious anemia (caused by a lack of vitamin B12), or hemolytic anemia (a disorder in which red blood cells are destroyed in the body faster than new ones can be produced). In addition, it is recommended that you tell your doctor if you are pregnant or breastfeeding, because you may need special tests before using this medicine during pregnancy.