How does NAGLAZYME® (galsulfase) work?

NAGLAZYME® (galsulfase) is a kind of treatment called enzyme replacement therapy, or ERT. ERT is a type of treatment for diseases that are caused by an enzyme that the body cannot make sufficiently. In ERT, the enzyme that is missing is replaced with a substitute enzyme. NAGLAZYME is a protein that is identical to the natural enzyme that is missing in MPS VI. NAGLAZYME reduces the GAG buildup that leads to MPS VI.

In clinical studies, NAGLAZYME has been shown to help with endurance, which is a measure of how well your body can perform physicially. People who took NAGLAZYME were able to do better on stair-climbing and walking tests. Additional long-term studies demonstrated that benefits continued for patients who stayed on NAGLAZYME treatment.

How you take NAGLAZYME

NAGLAZYME is given by infusion. This means that once a week, you will go to a hospital or infusion center. For some people, getting infusions at home may also be an option. During your infusion, a doctor or nurse will give you NAGLAZYME through an intravenous (IV) line. The procedure usually lasts about 4 hours. The IV gets the enzyme right into your bloodstream. The blood carries it to your body’s cells and organs to break down GAG.

Next Page

Important Safety Information


NAGLAZYME® (galsulfase) is indicated for patients with Mucopolysaccharidosis VI (MPS VI; Maroteaux-Lamy Syndrome). NAGLAZYME has been shown to improve walking and stair-climbing capacity.

Important Safety Information

Severe and life-threatening allergic reactions can occur during NAGLAZYME (galsulfase) infusions and up to 24 hours after infusion. Typical signs of an allergic reaction include shock, difficulty breathing, wheezing, swelling of the throat, and low blood pressure. If a severe allergic reaction occurs during infusion, the infusion should be stopped immediately and you should receive medical attention. Contact your doctor or get medical help right away if you develop any severe symptoms after infusion.

In clinical trials, most patients developed antibodies to NAGLAZYME treatment. There was no clear relationship between antibody formation and the safety or effectiveness of NAGLAZYME.

Serious and severe infusion reactions are associated with NAGLAZYME, including hives, chest pain, rash, abdominal pain, difficulty breathing, swelling, fever, and eye irritation. You should receive medication such as antihistamines before NAGLAZYME infusions to reduce the risk of infusion reactions. If an infusion reaction occurs, the infusion should be slowed or stopped and you may be given additional medication.

The most common side effects of NAGLAZYME seen in clinical trials were rash, pain, hives, fever, itching, chills, headache, nausea, vomiting, abdominal pain and difficulty breathing. The most common side effects requiring medical attention are infusion-related effects.

These are not all of the possible side effects with NAGLAZYME. Talk to your doctor if you have any symptoms that bother you or that do not go away.

NAGLAZYME is a prescription medicine. Before treatment with NAGLAZYME, it is important to discuss your medical history with your doctor. Tell your doctor if you are taking any medication and if you are allergic to any medicines. Your doctor will decide if NAGLAZYME is right for you. If you have questions or would like more information about NAGLAZYME, contact your doctor.

Spinal cord damage may occur due to the natural MPS VI disease process. Signs of spinal cord injury include back pain, loss of bladder and bowel control, numbness, and paralysis. Contact your doctor immediately if you develop any of these symptoms.

Call your doctor for medical advice about side effects. You may report side effects to BioMarin Pharmaceutical Inc. at 1-866-906-6100, or FDA at 1-800-FDA-1088 or go to

For more information, call BioMarin RareConnections at 1-866-906-6100.

Please see full Prescribing Information.