Is it ok to take a daily multivitamin as well as vitamin A and iron supplements?
Consult your doctor before deciding to take a supplement for long term. Vitamin A and iron can be toxic in great quantities, so be careful. Iron toxicity due to the overconsumption of dietary iron is not common, especially since nonheme iron absorption decreases as you eat more of it. However, this is not an excuse for eating supplements like candy. Vitamin A toxicity becomes an issue when the intake is about ten times the recommended daily amount (the RDA is 900 micrograms for male adults). The tolerable upper limit is about 3000 micrograms per day. It can cause blurred vision and painful swelling of the long bones, like the femur or the leg. There can be swelling of breast tissue in men, called gynecomastia. Impotence and other sexual dysfunction can also occur with a level of vitamin A that is outside the recommended range.
