Side Effects

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US –

In the US – Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada – Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Uses

Idursulfase is used to treat a certain inherited condition (mucopolysaccharidosis type II-Hunter syndrome) that causes a buildup of a certain substance (glycosaminoglycan-GAG) in the body. Idursulfase works by breaking down GAGs in the body. This medication may improve how far you can walk.

How to use Idursulfase 6 Mg/3 Ml Intravenous Solution

Read the Patient Information Leaflet if available from your pharmacist before you start using idursulfase and each time you get an infusion. If you have any questions, ask your doctor or pharmacist.

This medication is given by injection into a vein by a health care professional. It is given as directed by your doctor, usually once weekly. The first dose is injected slowly into a vein over 3 hours. Later doses may be given over a shorter time. The dosage and treatment schedule are based on your medical condition, weight, and response to treatment.

Tell your doctor or nurse right away if you have any symptoms of infusion reactions such as headache, dizziness, flushing, fever, nausea, or vomiting. Your doctor may slow down or stop your treatment for some time if you get serious side effects. Your doctor may also prescribe other medications before each treatment to help prevent these side effects. Carefully follow your doctor’s directions for all of your medications.

Use this medication regularly to get the most benefit from it. To help you remember, mark the days on the calendar when you need to receive the medication.

Tell your doctor if your condition gets worse.

Warnings

Idursulfase may rarely cause serious (sometimes fatal) allergic reactions that may happen while receiving idursulfase and for 24 hours after the infusion. A health care professional will monitor you closely during and after your infusion. Get medical help right away if you notice any signs of a serious allergic reaction, such as rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing. Your doctor may prescribe other medications (such as antihistamines, corticosteroids) to treat these side effects. Your infusion may also be slowed down or stopped depending on your symptoms.

Before you start your infusion, tell your doctor if you have breathing problems or a fever. Breathing problems may get worse during the infusion. Your doctor may delay your infusion or monitor you for longer periods after your infusion.

Precautions

Before using idursulfase, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: swelling, heart failure.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is unknown if this medication passes into breast milk. Consult your doctor before breast-feeding.

Overdose

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.

Keep all medical and lab appointments.

It is important to get each dose of this medication as scheduled. If you miss a dose, ask your doctor or pharmacist right away for a new dosing schedule.

Not applicable. This medication is given in a hospital or clinic or doctor’s office and will not be stored at home.

Interactions

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.