Iron overload (a.k.a.
“iron poisoning”) is possible if taken in excess.
Your healthcare provider can help you decide which iron supplement is best for you.
Verywell / JR Bee
This article explains when iron supplements are used and how to use them safely.
It also describes iron pill side effects and ways to avoid them.
Symptoms of Iron Deficiency
Iron is one of the minerals your body needs to function normally.
The body uses iron to makehemoglobin, the molecule inred blood cellsthat “carries” oxygen to cells.
The amount of iron you need each day depends on your age, sex, and pregnancy status.
Most tend to be mild but can become severe if you overuse them.
Common Side Effects
Iron supplements are generally safe and well-tolerated if taken at the recommended dose.
It often helps to start taking them with a lower dose and gradually increase the dose as tolerated.
Unlike some minerals, iron is not easily excreted from the body.
Excessive doses of iron can lead to iron poisoning.
Most cases are resulting from an inherited disorder calledhemochromatosisor when a large transfusion of red blood cells is given.
Drink a full 8-ounce glass of water or orange juice with each dose.
Thevitamin Cin orange juice is said to boost absorption.
How Long Do Iron Supplements Take to Correct a Deficiency?
Once started, you would need to continue treatment even if you feel better and no longer have symptoms.
This includes taking an iron supplement with cow’s milk.
In other cases, a dose adjustment may be needed.
Speak with your healthcare provider if you intend to take iron supplements with these or any other chronic medication.
Iron supplements can degrade when exposed to excessive temperatures and direct sunlight.
Always check the use-by date and discard any expired, discolored, or damaged supplements.
Side effects include dark stools, stomach cramps, nausea, diarrhea, constipation, and metallic taste.
Kumar A, Sharma E, Marley A, Samaan MA.
doi:10.1136/bmjgast-2021-000759
Office of Dietary Supplements/National Institutes of Health.Iron - fact sheet for health professionals.
Memorial Sloan Kettering Cancer Center.Ferrous Sulfate.
Centers for Disease Control and Prevention.Hereditary hemochromatosis.
doi:10.1001/jamanetworkopen.2020.23644
Camaschella, C.Iron deficiency.Blood.2019;133:30-9. doi:10.1182/blood-2018-05-815944.