Iron Side Effects

  • Does iron cause constipation?

    iron and constipation

    In some people, oral iron may cause constipation. To diminish symptoms of gastrointestinal discomfort, some people take their iron supplements with food or with a stool softener to try and offset constipation.

    Fortunately, Feosol® Complete with Bifera® is an innovative iron supplement specially designed with sensitive systems in mind. It contains two forms of iron for optimal absorption while minimizing the common uncomfortable side effects such as constipation and nausea.

  • Do I need to take a stool softener with iron?

    Though it may seem obvious, stool softeners are medications that soften your stool so that they are easier to pass. They are recommended when a person strains while eliminating or has difficulty during defecation, a condition referred to as occasional constipation.

    Some oral iron supplements may result in gastrointestinal upset and occasional constipation. Your doctor may recommend stool softeners if you are experiencing constipation (infrequent bowel movements are usually defined as three times or less per week).

    Taking an alternative form of iron, like Feosol Natural Release may minimize gastrointestinal complaints when compared to “irons salts” such as ferrous sulfate and ferrous gluconate.

    Most users do not find it necessary to combine Feosol Complete with a stool softener. The two types of iron that make up Feosol Complete, heme and non-heme iron, maximize absorption while minimizing gastrointestinal side effects such as diarrhea and constipation.

  • Does taking iron turn my stool black?

    You may have noticed after taking iron that your stools have turned black or dark green. While your first reaction might be, “Yikes! Something might be wrong,” don’t be alarmed.

    Black or dark stools are a common side effect that may be the harmless result of unabsorbed iron. Whether you are taking iron supplements alone or a multivitamin with iron, you may experience this.


    Other things that may cause black stools include:

    • Foods that are dark blue, black, or green
    • Bismuth (Pepto-bismol)
    • Black licorice
    • Blueberries

    Check with your doctor or healthcare provider to find the cause of black stools.

    1. Michael F. Picco, M.D. Mayo Foundation for Medical Education and Research (MFMER). Stool color: When to worry. Retrieved from: http: May 7, 2012.
  • Can I overdose on iron?

    Yes, you can overdose on an iron supplement. Be smart and follow the dosage instructions on the Feosol package.

    In fact, if you have small children in your home, take extra precaution as accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under age 6. In case of accidental overdose, call a doctor or call poison control center immediately. If you suspect that your child has overdosed, note that treatment is effective if instituted early enough and should be sought immediately.

  • Can I take iron with antibiotics?

    iron with antibiotics

    If you are currently taking antibiotics, be aware that oral iron products may interfere with the absorption of certain antibiotics.

    Take your iron supplement two hours before or after taking your antibiotic to avoid reducing the effectiveness of your antibiotics. When in doubt, ask your doctor.

  • Can I take iron with antacids?

    Iron supplements should not be taken with antacids. Antacids, especially those containing calcium, have been shown to decrease the absorption of iron.

    In fact, in some cases taking too many antacids that contain calcium is a factor in causing an iron deficiency because it keeps the body from absorbing the iron it needs.

    Unfortunately, for many people heartburn is a side effect of taking iron supplementation, so they may unwittingly combine the two not knowing that they are actually reducing the effectiveness of their iron supplement. If you must take both, take the iron supplement at least two hours before (or after) taking the antacid tablets.

  • Can I take iron with other medications or if I have a specific medical condition?

    If you have a specific medical condition, discuss Feosol iron options with your healthcare provider who will be familiar your condition and your medications.

    Iron supplements may interact with other medicines that you take. As a rule, you should always check with your doctor before you start, stop, or change the dose of any medicine.