Isovue-M-300

Isovue-M-300 is a contrast agent that makes certain areas of the body visible on x-rays. It contains iodine, which absorbs x-rays. Radiopaque contrast agents help to see blood vessels, organs, and other soft tissues more clearly during a CT scan or other x-ray examinations.

Isovue-M-300 is used to help diagnose specific problems with the heart, brain, blood vessels, and nervous system.

Isovue-M-300 may also be used for other reasons not mentioned in this medication guide.

You should not receive Isovue-M-300 if you have any type of active infection.

Tell your doctor if you have ever had:

• any type of reaction to another contrast agent;
• liver or kidney disease;
• heart disease, including congestive heart failure;
• a stroke, blood clots, or coronary artery disease;
• asthma, hay fever, food allergies;
• epilepsy or other seizure disorder;
• sickle cell anemia;
• diabetes;
• an active infection;
• pheochromocytoma (tumor of the adrenal gland);
• multiple myeloma (bone cancer); or
• a thyroid disorder.

It is not known if Isovue-M-300 will harm an unborn baby. Tell your doctor if you are pregnant.

Tell your doctor if you are breast-feeding.

Get emergency medical help if you notice signs of an allergic reaction (hives, difficulty breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning in your eyes, skin pain, a red or purple skin rash that spreads and causes blistering and peeling).

Seek medical treatment if you have a serious drug reaction that may affect multiple parts of your body. Symptoms can include: skin rash, fever, swollen glands, flu-like symptoms, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes.

Isovue-M-300 may cause serious side effects. Call your doctor immediately if you experience:

• a light-headed feeling, as if you might faint;
• swelling, rapid weight gain, or little to no urination;
• wheezing or difficulty breathing;
• seizure (convulsions);
• swelling in your neck or throat (enlarged thyroid);
• thyroid symptoms--extreme tiredness, dry skin, joint pain or stiffness, muscle pain or weakness, hoarse voice, increased sensitivity to cold, weight gain;
• heart attack symptoms--chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating;
• signs of a blood clot in the lung--chest pain, sudden cough or shortness of breath, coughing up blood; or
• signs of a stroke--sudden numbness or weakness (especially on one side of the body), sudden severe headache, slurred speech, problems with vision or balance.

Common side effects of Isovue-M-300 may include:

• chest pain;
• slow heart rate;
• hot flashes, burning sensation;
• flushing (warmth, redness, or tingling);
• nausea;
• hives; or
• dizziness.

This is not a complete list of side effects, and others may occur. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Isovue-M-300 is given as an infusion into a vein or artery. A healthcare provider will give you this injection.

You may be given medication to prevent certain side effects while you are receiving Isovue-M-300.

Tell your caregivers if you feel any burning, pain, or swelling around the IV needle when Isovue-M-300 is injected.

Drink extra fluids before and after your radiologic test. Isovue-M-300 can cause you to get dehydrated, which can lead to dangerous effects on your kidneys. Follow your doctor's instructions about the types and amount of fluids you should drink before and after your test.

Older adults may need special care to avoid becoming dehydrated. Your kidney function may need to be checked after you have received Isovue-M-300.

Some people receiving Isovue-M-300 have had reactions that did not start until 30 to 60 minutes after the medicine was first given. Your caregivers may want to watch you during this period of time after your injection. This is to make sure you do not have any unwanted side effects or delayed reactions.

Isovue-M-300 can interfere with certain medical tests for up to 16 days after you are treated with this medicine. Tell any doctor who treats you that you have recently received this medicine.

Since Isovue-M-300 is used only during your radiologic test, you will not have a dosing schedule.

Seek emergency medical help or call the Poison Help line at 1-800-222-1222.

Do not let yourself become dehydrated in the first few days after getting Isovue-M-300. Call your doctor if you experience any vomiting or diarrhea during this period. Follow your doctor's guidance on the types and amounts of fluids you should consume.

Tell your doctor about all your current medicines, especially:

• diabetes medicine that contains metformin (Glucophage, Glucovance, Actoplus Met, PrandiMet, Avandamet, Kombiglyze, Janumet, Kazano, Invokamet, Jentadueto, Xigduo, Synjardy, Metaglip, and others).

This list is not complete. Other drugs may affect Isovue-M-300, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.