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Generic Name: idursulfase (Intravenous route)
eye-dur-SUL-fase
Life-threatening anaphylactic reactions have been observed in some patients during idursulfase infusions. Therefore, appropriate medical support should be readily available when idursulfase is administered. Biphasic anaphylactic reactions have also been observed after idursulfase administration and patients who have experienced anaphylactic reactions may require prolonged observation. Patients with compromised respiratory function or acute respiratory disease may be at risk of serious acute exacerbation of their respiratory compromise due to infusion reactions, and require additional monitoring .
Anaphylactoid reactions, which may be life threatening, have been observed in some patients during idursulfase infusions. Appropriate supportive medical treatment should be readily available during treatment. Biphasic anaphylactic reactions have also been observed with idursulfase, and patients who have experienced anaphylactic reactions may require prolonged observation. Patients with compromised respiratory function or acute respiratory disease may be at risk of serious acute exacerbation of their respiratory compromise due to infusion reactions, and require additional monitoring .
Commonly used brand name(s):
In the U.S.
Available Dosage Forms:
Therapeutic Class: Enzyme Replacement
Pharmacologic Class: Enzyme
Idursulfase is used to treat Hunter syndrome (Mucopolysaccharidosis II, MPS II), a rare condition that is most often seen in males. Hunter syndrome is an inherited disease in which the breakdown of a certain chemical in the body (mucopolysaccharide) is defective due to the lack or absence of an enzyme called iduronate-2-sulfatase .
Idursulfase improves signs and symptoms in patients, especially walking capacity, by replacing the missing enzyme in Hunter syndrome .
This medicine is available only with your doctor's prescription .
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies performed to date have not demonstrated pediatrics-specific problems that would limit the usefulness of idursulfase in children. Safety and efficacy have not been established in children under 5 years of age .
No information is available on the relationship of age to the effects of idursulfase in geriatric patients .
| Pregnancy Category | Explanation | |
|---|---|---|
| All Trimesters | C | Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women. |
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
Call your doctor or pharmacist for instructions.
It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and check you for unwanted effects that may be caused by this medicine .
Some people who have used this medicine developed serious allergic reactions while receiving the medicine. Tell your doctor right away if you start having chest tightness, trouble breathing, dizziness, rash, swelling in your face or hands, blurred vision, or convulsions while you are on this medicine .
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
More CommonSome side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More CommonOther side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
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