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Diiodohydroxyquinoline

About Diiodohydroxyquinoline

Diiodohydroxyquinoline is an oral prescription medicine used to treat intestinal amoebiasis, which is a parasitic infection of the bowels. It works directly within your digestive tract to target and eliminate the parasites causing the infection. By clearing these organisms, the medicine helps relieve uncomfortable symptoms like persistent diarrhoea and stomach pain.

To get the best results, you must take Diiodohydroxyquinoline regularly and complete the entire course prescribed by your doctor, even if you start feeling better. It is best to take this medicine after meals to help prevent stomach irritation or nausea. Additionally, maintaining good personal hygiene and drinking clean, safe water during your treatment will support your recovery and prevent re-infection.

While taking Diiodohydroxyquinoline, some people may experience mild side effects, such as a temporary upset stomach or a mild skin rash. However, you must consult your doctor immediately if you experience any serious side effects, such as changes in your vision, eye pain, or numbness and tingling in your hands or feet.

Before starting this medicine, tell your doctor about any existing health conditions, especially if you have thyroid disease or liver damage. Do not take this if you are allergic to iodine, as Diiodohydroxyquinoline contains high levels of iodine which can trigger a severe allergic reaction or worsen thyroid issues.

This medicine can interact with certain medical tests, particularly thyroid scans, so inform your healthcare provider before undergoing any laboratory work. It is also important to tell your doctor if you are pregnant or breastfeeding or if you are seeking treatment for an elderly family member so they can assess if this medication is safe to use.

Uses of Diiodohydroxyquinoline

Treatment of Intestinal amebiasis (amoebic diahhorea).

Medicinal Benefits

Diiodohydroxyquinoline helps treat intestinal parasitic infections by acting directly within the digestive tract. By targeting parasites at the site of infection, it helps relieve digestive symptoms and supports recovery while limiting systemic exposure.

  • Provides Targeted Treatment in the Intestines: Because Diiodohydroxyquinoline acts primarily within the digestive tract, it delivers treatment directly to the site of infection, helping eliminate intestinal parasites effectively.
  • Helps Relieve Digestive Symptoms: By clearing the underlying parasitic infection, Diiodohydroxyquinoline helps reduce abdominal cramps, bloating, diarrhoea, and other symptoms associated with intestinal irritation.
  • Supports Faster Recovery and Digestive Health: As the infection resolves, Diiodohydroxyquinoline helps restore normal bowel function, reduces the risk of dehydration related to diarrhoea, and supports a quicker return to everyday activities.
     

Directions for Use

  • Diiodohydroxyquinoline can be taken after meals to avoid stomach upset, or as advised by the doctor.
  • Follow your doctor's instructions on the dosage and timing of this medication to ensure safety.
  • Swallow Diiodohydroxyquinoline as a whole with a glass of water.
  • Do not chew, crush, or break it.

Storage

Store in a cool and dry place away from sunlight

Side Effects of Diiodohydroxyquinoline

Common Side Effects (Usually mild):

  • Nausea or vomiting
  • Stomach pain or mild abdominal cramps
  • Temporary diarrhoea
  • Headache
  • Mild skin itching

Serious Side Effects (Call a doctor right away):

  • Blurry vision, eye pain, or any changes in your eyesight
  • Numbness, burning, or a 'pins and needles' sensation in your arms, hands, legs, or feet
  • Swelling or a lump in your neck (which may indicate an enlarged thyroid gland)
  • Severe allergic reactions, such as swelling of your face, lips, tongue, or throat, or difficulty breathing
     

Medicines Containing this Salt

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Drug Warnings

  • Watch for vision changes: Monitor your eyesight closely during treatment. If you experience any blurred vision or eye pain, stop taking the medicine and contact your doctor immediately.
  • Avoid prolonged use: Do not take Diiodohydroxyquinoline for longer than your doctor has prescribed, as taking it for extended periods increases the risk of nerve damage.
  • Inform laboratory staff: Tell your healthcare team you are taking this medicine before having any thyroid function tests, as the iodine content in Diiodohydroxyquinoline can alter your test results.
  • Check the packaging: Before taking your dose, inspect the tablet blister strip. Do not take the medication if the foil is torn or broken or if the tablets look discoloured.
     

Drug Interactions

Drug-Drug Interactions

  • Other neurotoxic medicines: Taking Diiodohydroxyquinoline with other drugs that can cause nerve damage may increase your risk of experiencing numbness, tingling, or vision problems.
  • Thyroid medications: This medicine contains high levels of iodine, which can interfere with thyroid hormone therapies and affect how your thyroid medications work.


Drug-Disease Interactions

  • Thyroid disorders: Because of its high iodine content, Diiodohydroxyquinoline can worsen pre-existing thyroid conditions, such as goitre or an underactive thyroid.
  • Liver damage: If you have severe liver disease, this medicine should be avoided as it can place extra strain on your liver function.
  • Pre-existing nerve issues: If you suffer from optic nerve damage or peripheral neuropathy, this medicine may worsen your symptoms and should be used with extreme caution.
     

Drug-Drug Interactions Checker List:

  • IODINE
  • LEVOTHYROXINE SODIUM
  • THYROXINE
  • THYROXINE SODIUM
  • Safety Advice

    • Safety Warning

      Alcohol

      caution

      Alcohol consumption may increase the risk of side effects. Hence, do not consume alcohol while on treatment with this medicine.

    • Safety Warning

      Pregnancy

      unsafe

      Diiodohydroxyquinoline is a category C drug. It may cause toxic effects on the unborn baby when used during pregnancy. Hence, if you are pregnant, inform your doctor beforehand.

    • Safety Warning

      Breast Feeding

      caution

      Diiodohydroxyquinoline should be used with caution in breastfeeding as it may pass into breast milk and harm your infant.

    • Safety Warning

      Driving

      caution

      Diiodohydroxyquinoline may cause dizziness. Hence, avoid driving or operating machinery after taking this medicine until you are alert.

    • Safety Warning

      Liver

      caution

      Diiodohydroxyquinoline should be used with caution in patients with liver disease. Dose adjustments may be necessary. If you have liver problems, consult your doctor before taking this medicine.

    • Safety Warning

      Kidney

      caution

      Diiodohydroxyquinoline should be used with caution in patients with kidney disease. Dose adjustments may be necessary. If you have kidney problems, consult your doctor before taking this medicine.

    • Safety Warning

      Children

      caution

      Diiodohydroxyquinoline should be used with caution in children below 12 years of age. Your doctor will decide the dose based on your child's age, body weight and condition.

    Habit Forming

    No

    Diet & Lifestyle Advise

    • Drink purified water: Only consume bottled, boiled, or thoroughly filtered water to avoid introducing new parasites into your system.
    • Wash your hands frequently: Use soap and clean water to wash your hands thoroughly after using the bathroom and before preparing or eating meals.
    • Eat cooked foods: Avoid raw vegetables, unpeeled fruits, and street food during your recovery, as these carry a higher risk of parasitic contamination.
    • Stay hydrated: Drink oral rehydration solutions (ORS) or clear broths to replace vital fluids and salts lost from diarrhoea.
       

    Special Advise

    • If you have major diarrhoea, it is advisable to drink appropriate amounts of fluids or water to avoid dehydration. If you have minor diarrhoea (i.e. less than four stools daily), try to include caffeine-free soft drinks, juices or sport rehydration drinks. If the diarrhoea is more severe, specially formulated rehydration drinks should be taken. Do not take plenty of fluid if you are a kidney patient. Consult your doctor immediately.

    • Do not take Diiodohydroxyquinoline if you are allergic to iodine or iodine-containing products like shrimp. 

    Patients Concern

    Disease/Condition Glossary

    Amoebic dysentery: It is an intestinal (bowel) illness caused by a parasite (amoeba) known as Entamoeba histolytica spread through human faeces (poop). Usually, there are no symptoms, but, sometimes, it causes diarrhoea (loose stool/poop), nausea (a feeling of sickness in the stomach) and weight loss.

    Balantidiasis: It is the inflammation of the large intestine (colon) caused by Balantidium coli. Symptoms include chronic diarrhoea, nausea, abdominal pain and weight loss.

    FAQs

    Diiodohydroxyquinoline is used in the treatment of amoebiasis, also known as amebic dysentery. It can be used for the treatment of bacterial and fungal infections. It is also used to treat Balantidiasis.

    Diiodohydroxyquinoline acts by identifying and killing the growing parasites in the intestines which cause dysentery. It is also used in the treatment of some bacterial and fungal infections.

    Diiodohydroxyquinoline is not recommended for long-term use. This medicine is usually given for 20 days.

    Diiodohydroxyquinoline contains ‘iodine’ and may interfere with some thyroid tests if this medicine is taken in patients with thyroid problems.

    Do not stop taking this medicine even if you feel better, as it may cause a recurrence of symptoms. So, completing the course of therapy as prescribed by your doctor is always recommended.

    While there is no direct interaction, it is highly recommended to avoid alcohol during treatment. Alcohol can irritate your stomach, worsen diarrhoea, and increase nausea. Talk to your doctor or pharmacist for more advice.

    Yes, if taken in very high doses or for longer than recommended, this medicine can cause nerve problems, including tingling in the limbs and changes in vision. Always take Diiodohydroxyquinoline exactly as prescribed. Talk to your doctor if you notice any unusual sensations.

    Yes, it is best to take Diiodohydroxyquinoline after a meal. Taking it with or after food helps protect your stomach lining and reduces the chances of feeling nauseous. Talk to your doctor or pharmacist if you have trouble taking it.

    The safety of this medicine in pregnant women has not been fully established. It should only be used if your doctor decides the benefit outweighs any risks. Talk to your doctor if you are pregnant or planning to become pregnant.

    Diiodohydroxyquinoline contains a large amount of iodine, which can interfere with thyroid function tests for several weeks after you stop taking it. Always tell your doctor or laboratory technician that you are taking this medicine before any blood tests. Talk to your doctor for more details.

    Take the missed dose as soon as you remember. If it is almost time for your next scheduled dose, skip the missed one and continue your normal routine. Do not take two doses at the same time. Talk to your doctor if you miss multiple doses.

    Most people begin to feel better within a few days, but you must complete the full course of treatment to ensure all the parasites are cleared. Stopping early can cause the infection to return. Talk to your doctor if your symptoms do not improve after a few days.

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