Iron is a pro-oxidant, and iron overload can have severe consequences. Iron overdose is quite common. Children should not take iron supplements, and everyone should consult with a health care provider before taking iron supplements for any length of time. Patients with Parkinson's Disease should not take iron supplements without consulting a medical professional. Iron should be taken separately from the following medicaions, as they may inhibit absorptions.
Vitamin C can enhance the absorption of iron, so overload is a theoretical concern.
Stored iron and ischemic heart disease. Effect of ascorbic acid on apparent iron absorption by women with low iron stores. 5 Suharno D, West CE, Muhilal, et al. Supplementation with vitamin A and iron for nutritional anemia in pregnant women in West Java, Indonesia.