What is Iron Supplement: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Iron Supplement overview

BRAND NAMES:

  • Abatron, Aces, Aces Gold, Aces Plus Zinc, Ace + Z, Abatron AF, Able Eyes, A-Free Ultra Freeda, Actitrom-D, Actitrom, Actipochol Plus, Actical, Actiflovit, 50+ Companion Women's Multivitamin, A/G Pro, Balcoltra, Beef/Iron/Wine, Bifera, BiferaRx, Corvite FE, Duofer, Enfamil Fer-In-Sol, EZFE 200, Fe-20, Femcon Fe, Feosol, Feosol Bifera, Ferate, Fergon, Ferosul, Injectafer, Triferic, Monoferric

Generic Names:

  • Ferrous Sulfate

Uses:

  • Multivitamins are given to people who need more vitamins in their diet., Treats low blood iron or anemia by helping your body make red blood cells., Treats anemia (not enough iron in the blood)., Treats anemia (not enough iron in the blood)., Corrects iron loss in patients with kidney disease who are on dialysis., Treats anemia (not enough iron in the blood).

Therapeutic Classes:

  • Antiacne, Antidote, Antihyperlipidemic, Appetite Suppressant, Centrally Acting, Calcium Supplement, Cartilaginous Defect Repair Agent, Endocrine-Metabolic Agent, Iron Supplement, Lipotrophic Combination, Magnesium Supplement, Mineral/Nutriceutical Combination, Nutriceutical, Nutritive Agent, Probiotic, Vitamin/Iron Combination, Adult Formula, Vitamin/Mineral/Iron Combination, Adult Formula, Vitamin/Mineral/Iron Combination, Pediatric Formula, Vitamin/Mineral/Nutriceutical Combination, Adult Formula, Vitamin/Mineral Combination, Adult Formula, Vitamin/Nutriceutical Combination, Adult Formula, Vitamin B Combination, Vitamin Combination, Vitamin Combination, Adult Formula, Vitamin Combination, Prenatal Formula, Iron Supplement, Nutritive Agent, Vitamin/Iron Combination, Adult Formula, Vitamin Combination, Iron Supplement, Iron Supplement, Iron Supplement, Iron Supplement

Forms:

  • Tablet, Long Acting Tablet, Chewable Tablet, Liquid Filled Capsule, Liquid, Capsule, Powder for Suspension, Liquid Filled Capsule, Coated Tablet, Tablet, Capsule, Chewable Tablet, Liquid, Long Acting Capsule, Long Acting Tablet, Injectable, Injectable, Liquid, Injectable

How it’s taken:

  • By injection, Not Applicable, By injection, By injection, By mouth, By mouth

What is Iron Supplement used for?

What form(s) does Iron Supplement come in

  • Tablet

  • Long Acting Tablet

  • Chewable Tablet

  • Liquid Filled Capsule

  • Liquid

  • Capsule

  • Powder for Suspension

  • Liquid Filled Capsule

  • Coated Tablet

  • Tablet

  • Capsule

  • Chewable Tablet

  • Liquid

  • Long Acting Capsule

  • Long Acting Tablet

  • Injectable

  • Injectable

  • Liquid

  • Injectable

What are common Iron Supplement doses?

  • Bottle 473ML of 220 (44 Fe)MG/5ML

How to take Iron Supplement

  • Injection routeYour doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Injection routeYour doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • A doctor or other healthcare professional will give you this medicine in a dialysis clinic or hospital. This medicine is added to the dialysis solution.

  • A doctor or other healthcare professional will give you this medicine in a dialysis clinic or hospital. This medicine is added to the dialysis solution.

  • Injection routeYour doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Injection routeYour doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Injection routeYour doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.

  • Injection routeYour doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Your doctor will tell you how much of this medicine to take and how often. Do not take more medicine or take it more often than your doctor tells you to. Carefully follow your doctor's instructions about any special diet.

  • It is best to take this medicine on an empty stomach, 1 hour before or 2 hours after a meal. Take the medicine with a full glass or water or fruit juice. If the medicine upsets your stomach, you may take it with food.

  • The chewable tablet must be chewed or crushed before you swallow it.

  • Measure the oral liquid medicine with a marked measuring spoon or medicine cup.

  • The oral liquid may stain your teeth. These stains can be prevented by mixing the medicine with water or other liquids (such as fruit juice, tomato juice), and drinking the medicine with a straw. To remove any iron stains, brush your teeth with baking soda or peroxide.

  • Measure the oral liquid medicine with a marked measuring spoon or medicine cup.

  • The oral liquid may stain your teeth. These stains can be prevented by mixing the medicine with water or other liquids (such as fruit juice, tomato juice), and drinking the medicine with a straw. To remove any iron stains, brush your teeth with baking soda or peroxide.

  • The chewable tablet must be chewed or crushed before you swallow it.

  • Your doctor will tell you how much of this medicine to take and how often. Do not take more medicine or take it more often than your doctor tells you to. Carefully follow your doctor's instructions about any special diet.

  • It is best to take this medicine on an empty stomach, 1 hour before or 2 hours after a meal. Take the medicine with a full glass or water or fruit juice. If the medicine upsets your stomach, you may take it with food.

  • You should not use more of a multivitamin than your doctor has ordered or more than the package label recommends. Some vitamins can build up in your body and can be harmful.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Swallow the tablet, extended-release tablet, capsule, or liquid-filled capsule whole. Do not break, chew, or crush it.

  • Chew the chewable tablet before swallowing. Drink one cup (8 ounces) of liquid to help swallow the tablet after chewing.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup. The oral liquid may be mixed with food.

  • Swallow the tablet, extended-release tablet, capsule, or liquid-filled capsule whole. Do not break, chew, or crush it.

  • Chew the chewable tablet before swallowing. Drink one cup (8 ounces) of liquid to help swallow the tablet after chewing.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup. The oral liquid may be mixed with food.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • You should not use more of a multivitamin than your doctor has ordered or more than the package label recommends. Some vitamins can build up in your body and can be harmful.

What to do if you miss a dose of Iron Supplement

  • It is generally not harmful if you miss a dose of a multivitamin. Take it as soon as you remember. Do not take two doses at one time.

  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children.

  • If you miss a dose or forget to take your medicine, take it as soon as you can. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose.

  • Do not use extra medicine to make up for a missed dose.

Iron Supplement contraindications

  • This medicine is not right for everyone. You should not receive it if you had an allergic reaction to ferric carboxymaltose.

  • This medicine is not right for everyone. You should not receive it if you had an allergic reaction to ferric pyrophosphate citrate.

  • This medicine is not right for everyone. You should not receive it if you had an allergic reaction to ferric derisomaltose.

  • This medicine is not right for everyone. You should not receive it if you had an allergic reaction to ferric pyrophosphate citrate.

  • You should not use this medicine if you have had an allergic reaction to iron supplements, or if you have a condition called hemachromatosis (iron overload disease) or hemosiderosis (iron in the lungs), or any type of anemia that is not caused by iron deficiency.

  • You should not use this medicine if you have had an allergic reaction to any single vitamin or multivitamin. Do not use this medicine if you are under 18 years old.

Iron Supplement warnings

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have stomach or intestinal problems, an active infection, diabetes, porphyria, or other medical problems.

  • Make sure any doctor or dentist who treats you knows that you are using this medicine. Iron may affect the results of certain medical tests.

  • Iron can cause your stools to be darker in color. This is normal and is not a cause for concern.

  • Fever

  • Pale or clammy skin

  • Severe or continuing stomach cramps, vomiting (with or without blood)

  • Shallow breathing, weakness, weak but fast heartbeat

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have had an allergic reaction to injectable iron products.

  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, or had an allergic reaction to injectable iron products.

  • Tell your doctor if you are pregnant or breastfeeding, or if you had an allergic reaction to injectable iron products.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant. Use effective birth control during treatment and for at least 2 weeks after your last dose.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have liver disease or high blood pressure. Tell your doctor if you have had an allergic reaction to injectable iron products.

  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Warmth or redness in your face, neck, arms, or upper chest

  • You should not use certain brands of this medicine if you have kidney disease or are on dialysis, because they may harm your kidneys. Ask your caregiver what brands are best for you.

  • Multivitamins can turn urine bright yellow and stools a darker color. This is normal.

  • Tell any doctor or dentist who treats you that you are using this medicine. You may need to stop using this medicine several days before you have surgery or medical tests.

  • Ask your doctor before using this medicine if you have heart disease, liver disease, kidney stones, an overactive thyroid gland. a bleeding disorder, or sarcoidosis. Tell your doctor if you smoke or drink alcohol regularly.

  • If you are pregnant or breast feeding, ask your doctor what vitamins are best for you to use.

Iron Supplement interactions

  • Ask your doctor before using this medicine if you have heart disease, liver disease, kidney stones, an overactive thyroid gland. a bleeding disorder, or sarcoidosis. Tell your doctor if you smoke or drink alcohol regularly.

  • If you are pregnant or breast feeding, ask your doctor what vitamins are best for you to use.

  • Multivitamins can turn urine bright yellow and stools a darker color. This is normal.

  • Tell any doctor or dentist who treats you that you are using this medicine. You may need to stop using this medicine several days before you have surgery or medical tests.

  • You should not use certain brands of this medicine if you have kidney disease or are on dialysis, because they may harm your kidneys. Ask your caregiver what brands are best for you.

  • Some foods and medicines can affect how this medicine works. Tell your doctor if you are also using an iron supplement that you take by mouth.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.

  • It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant. Use effective birth control during treatment and for at least 2 weeks after your last dose.

  • Tell your doctor if you are pregnant or breastfeeding, or if you had an allergic reaction to injectable iron products.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Some foods and medicines can affect how this medicine works. Tell your doctor if you are also using an iron supplement that you take by mouth.

  • Some foods and medicines can affect how this medicine works. Tell your doctor if you are also using an iron supplement that you take by mouth.

  • Avoid the following foods, or eat them in small amounts at least 1 hour before or 2 hours after taking your iron: eggs, milk, cheese, yogurt, tea or coffee, whole-grain cereals, and breads.

  • Do not take iron supplements by mouth if you are also receiving iron injections.

  • Make sure your doctor knows if you are also using phenytoin (Dilantin®), acetohydroxamic acid (Lithostat®), or antibiotics such as demeclocycline, doxycycline (Vibramycin®), Cipro®, Levaquin®, minocycline, moxifloxacin (Avelox®), Tequin®, or tetracycline.

  • Tell your doctor if you are using antacids (such as Maalox® or Mylanta®).

Iron Supplement side effects

Serious Side Effects

  • Bloody diarrhea.

  • Severe stomach pain or vomiting.

  • Nausea, heartburn, or upset stomach.

  • Lightheadedness, dizziness, fainting

  • Fast, slow, or pounding heartbeat

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Chest pain, trouble breathing

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Trouble breathing

  • Rapid weight gain, swelling of the hands or feet

  • Lightheadedness, dizziness, fainting

  • Chest pain, trouble breathing

  • Lightheadedness, dizziness, fainting

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Fever

  • Shallow breathing, weakness, weak but fast heartbeat

  • Pale or clammy skin

  • Severe or continuing stomach cramps, vomiting (with or without blood)

  • Bloody diarrhea

  • Bluish-colored lips, hands, or fingernails

  • Chest pain

Less Serious Side Effects

  • Dark-colored urine

  • Constipation, diarrhea, nausea

  • Leg cramps

  • Pain, discoloration, or a bruise under your skin where the needle is placed

  • Muscle spasms

  • Headache

  • Pain, discoloration, or a bruise under your skin where the needle is placed

  • Pain in the arms or legs

  • Pain, discoloration, or a bruise under your skin where the needle is placed

  • Nausea

  • Constipation or diarrhea.

  • Loss of appetite or bad taste in your mouth.

  • Nausea, heartburn, or upset stomach.