Iron Toxicity in Dogs

Iron Toxicity in Dogs

By: PetPlace Veterinarians

Section: Overview

Iron is a chemical element that is normally important to red blood cell production in the body. It is found in a variety of supplements and vitamins. Iron toxicity typically occurs after accidental ingestion of the supplements or from overdoses of supplements.

Iron comes in a variety of forms and is indicated by the word Ferrous, meaning "containing iron." These formulations of iron are generally found in oral iron supplements. The forms of iron that may result in toxicity are:

  • Ferrous fumarate
  • Ferrous sulfate
  • Ferric phosphate
  • Ferrous carbonate

    Toxic levels of iron cause damage to the stomach and intestinal lining. It can also cause severe liver damage and heart damage.

    Pets are more easily affected by iron overdoses than people because they do not have a way to excrete excessive iron from their bodies.
    If low doses of iron are given over a period of time, toxicity can still develop since their body cannot get rid of the iron already present.

    What to Watch For

  • Drowsiness
  • Lethargy
  • Vomiting
  • Bloody Diarrhea

    The first signs generally occur within six hours of eating a toxic amount of iron. Even without treatment, your dog may appear to have improved after the initial gastrointestinal upset. Unfortunately, spontaneous recovery has not occurred and about 24 hours later, diarrhea returns along with liver failure, shock and possible coma. Bleeding disorders can also occur.

    Diagnosis

    Diagnosing iron toxicity is based on the level of iron in the blood as well as access or exposure to iron supplements.

    Blood tests may also be needed to determine the function of the liver and kidneys.

    X-rays may be required to determine if additional iron is within the intestinal tract.

    Treatment

    Expect your veterinarian to recommend hospitalization with continuous intravenous fluids. Additional recommendations may include:

  • The gastrointestinal tract will need to be decontaminated if ingestion occurred just prior to treatment. This is typically done by either inducing vomiting or gastric lavage (stomach pumping).

  • Deferoxamine can be used to convert some of the remaining intestinal iron into a compound that does not affect the system.

  • Blood iron levels will need to be monitored for about two to three days. This is the time it may take for the iron levels in the blood to go below toxic levels.

    Home Care and Prevention

  • There is no home care for iron toxicity. Once the signs of iron toxicity are seen, prompt treatment by a veterinarian is strongly recommended.

  • After surviving iron toxicity, your dog may not have full function of the liver or gastrointestinal tract and specific lifetime medications and special diets may be necessary.

  • Watch for poor appetite, vomiting, diarrhea, weakness and lethargy. If these signs are seen, please consult your family veterinarian.

  • The best preventative care is to give your dog supplements only if directed by your veterinarian. Medications and supplements that may be safe for people can be fatal to pets. Also, make sure that all medications, including supplements, are kept out of the reach of inquisitive pets. Keeping medicine safely stored away can prevent many tragedies.

     
    Printable Version
     
    Have a Pet Question?
    Send Your Pet Question to Dr. Jon
    and His Staff of Veterinarians Ask Dr. Jon
    Dr. Jon's Newsletter
    Yes! Send Me the Latest Health Information, Pet Tips, Pet Stories and more...
     
     

    Related Articles

    • 1 Lead Toxicity in Dogs

      Lead toxicity refers to poisoning due to ingestion or inhalation of products containing the element lead. Pets may be exposed to lead from several different sources including lead paint, automotive items...

      Read MoreRead More
    • 2 Your Guide to Common Dog Poisonings

      There are hundreds of items your pet can get access to. Some things are highly toxic and others are non-toxic. This article is a guide to help you determine if a particular item is a problem.

      Read MoreRead More
    • 3 Gastroenteritis in Dogs

      An occasional bout of vomiting and diarrhea is quite common in dogs; however, severe, acute vomiting and diarrhea is not normal, and can be associated with life threatening illnesses. It can cause extreme...

      Read MoreRead More
    • 4 Poisoning in Dogs – What You Should Know

      Poisoning is a common problem in dogs and cats. Damage to the body is based on the amount of poison ingested and how long the poison was in the body before treatment. If treatment is immediate, many poisons...

      Read MoreRead More
    • 5 Hepatic Failure in Dogs

      Hepatic (liver) failure is the loss of greater than 75 percent of the function of the liver, occurring secondary to severe, massive liver necrosis (death). This is a syndrome seen more commonly in dogs...

      Read MoreRead More
  • Related Articles
    • 1 Poisoning in Dogs – What You Should Know

      Poisoning is a common problem in dogs and cats. Damage to the body is based on the amount of poison ingested and how long the poison was in the body before treatment. If treatment is immediate, many poisons...

      Read MoreRead More
    • 2 Your Guide to Common Dog Poisonings

      There are hundreds of items your pet can get access to. Some things are highly toxic and others are non-toxic. This article is a guide to help you determine if a particular item is a problem.

      Read MoreRead More
    • 3 Hepatic Failure in Dogs

      Hepatic (liver) failure is the loss of greater than 75 percent of the function of the liver, occurring secondary to severe, massive liver necrosis (death). This is a syndrome seen more commonly in dogs...

      Read MoreRead More
    • 4 Gastroenteritis in Dogs

      An occasional bout of vomiting and diarrhea is quite common in dogs; however, severe, acute vomiting and diarrhea is not normal, and can be associated with life threatening illnesses. It can cause extreme...

      Read MoreRead More
    • 5 Lead Toxicity in Dogs

      Lead toxicity refers to poisoning due to ingestion or inhalation of products containing the element lead. Pets may be exposed to lead from several different sources including lead paint, automotive items...

      Read MoreRead More
     

    Over 10,000 Veterinarian Approved Articles

    Related Articles
    • 1 Poisoning in Dogs – What You Should Know

      Poisoning is a common problem in dogs and cats. Damage to the body is based on the amount of poison ingested and how long the poison was in the body before treatment. If treatment is immediate, many poisons...

      Read MoreRead More
    • 2 Your Guide to Common Dog Poisonings

      There are hundreds of items your pet can get access to. Some things are highly toxic and others are non-toxic. This article is a guide to help you determine if a particular item is a problem.

      Read MoreRead More
    • 3 Hepatic Failure in Dogs

      Hepatic (liver) failure is the loss of greater than 75 percent of the function of the liver, occurring secondary to severe, massive liver necrosis (death). This is a syndrome seen more commonly in dogs...

      Read MoreRead More
    • 4 Gastroenteritis in Dogs

      An occasional bout of vomiting and diarrhea is quite common in dogs; however, severe, acute vomiting and diarrhea is not normal, and can be associated with life threatening illnesses. It can cause extreme...

      Read MoreRead More
    • 5 Lead Toxicity in Dogs

      Lead toxicity refers to poisoning due to ingestion or inhalation of products containing the element lead. Pets may be exposed to lead from several different sources including lead paint, automotive items...

      Read MoreRead More
    Advertisement
    Advertisement