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Naglazyme Side Effects

Generic Name: galsulfase

Note: This page contains side effects data for the generic drug galsulfase. It is possible that some of the dosage forms included below may not apply to the brand name Naglazyme.

In Summary

Common side effects of Naglazyme include: severe infusion related reaction, rigors, conjunctivitis, infusion related reaction, development of igg antibodies, chest pain, pain, dyspnea, pharyngitis, and otalgia. See below for a comprehensive list of adverse effects.

For the Consumer

Applies to galsulfase: intravenous solution

As well as its needed effects, galsulfase (the active ingredient contained in Naglazyme) may cause unwanted side effects that require medical attention.

If any of the following side effects occur while taking galsulfase, check with your doctor or nurse immediately:

Less common:
  • Blurred or decreased vision
  • chest pain
  • difficult or labored breathing
  • dizziness
  • headache
  • hernia of the naval
  • nervousness
  • pounding in the ears
  • slow or fast heartbeat
  • swelling of the face
  • tightness in the chest
Incidence not known:
  • Back pain
  • bluish lips or skin
  • confusion
  • cough
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • fever, chills, or sweating
  • hives or welts
  • joint pain
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • loss of bladder control
  • loss of bowel control
  • nausea or vomiting
  • paralysis of the limbs
  • stomach pain

Severity: Minor

Some galsulfase side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Diarrhea
  • ear pain
  • loss of appetite
Less common:
  • Body aches or pain
  • burning, dry, or itching eyes
  • congestion
  • dryness or soreness of the throat
  • excessive tearing
  • loss of or increase in reflexes
  • runny or stuffy nose
  • tender, swollen glands in the neck
  • trouble with swallowing
  • unusual tiredness or weakness
  • voice changes
Incidence not known:
  • Difficulty with moving
  • loss of voice
  • muscle pain or stiffness
  • sneezing

For Healthcare Professionals

Applies to galsulfase: intravenous solution


During a double-blind, placebo-controlled trial, 19 patients received galsulfase (the active ingredient contained in Naglazyme) and 20 patients received placebo. Serious side effects included apnea, pyrexia, and respiratory distress. Severe side effects included chest pain, dyspnea, laryngeal edema, and conjunctivitis.

During 4 open-label clinical trials, common side effects included pruritus, urticaria, pyrexia, headache, nausea, and vomiting. Serious side effects included laryngeal edema, urticaria, angioedema, and other allergic reactions. Severe side effects included urticaria, rash, and abdominal pain.

During each trial, the most common side effects requiring interventions were infusion reactions.[Ref]


Infusion reactions have been reported as early as the first week and as late as the 146th week of galsulfase (the active ingredient contained in Naglazyme) therapy.

Infusion reaction symptoms generally abated with slowing or temporary interruption of the infusion along with administration of additional antihistamines, antipyretics, and occasionally corticosteroids. Most patients were able to complete their infusions. Subsequent infusions were managed with a slower rate of galsulfase administration and treatment with additional prophylactic antihistamines. In patients who had more severe reactions, treatment included prophylactic corticosteroids.[Ref]

Other side effects have included abdominal pain (47%), ear pain (42%), pain (32%), chills/rigors (21%), chest pain (16%), malaise (11%), umbilical hernia (11%), pyrexia, and facial edema. Infusion reactions (some severe) have been reported in 56% of patients despite routine pretreatment with antihistamines. Serious symptoms reported during infusion have included angioedema, laryngeal edema, pyrexia, anaphylactoid reaction, respiratory distress, apnea, and urticaria. Severe symptoms of infusion reactions have included chest pain, dyspnea, apnea, laryngeal edema, conjunctivitis, rash, and urticaria. The most common infusion reaction symptoms have included pyrexia, chills, rash, urticaria, dyspnea, nausea, vomiting, pruritus, erythema, hypertension, abdominal pain, and headache. Symptoms of infusion reactions have also included respiratory distress, chest pain, hypotension, angioedema, conjunctivitis, tremor, cough, retrosternal pain, and joint pain. Recurrent infusion reactions have been reported in 70% of patients during multiple infusions, but not always in consecutive weeks. Serious reactions occurring during galsulfase infusion (including anaphylaxis, shock, hypotension, bronchospasm, and respiratory failure) have been reported during postmarketing experience. Additional infusion reactions (including pyrexia, erythema, pallor, bradycardia, tachycardia, hypoxia, cyanosis, tachypnea, and paresthesia) have been reported during postmarketing experience.[Ref]


Hypersensitivity side effects have included anaphylaxis and severe allergic reactions. Some reactions have been life-threatening and have included anaphylaxis, shock, respiratory distress, dyspnea, bronchospasm, laryngeal edema, and hypotension. Angioedema and other allergic reactions (unspecified) have been reported.[Ref]


Respiratory side effects have included dyspnea (21%), pharyngitis (11%), nasal congestion (11%), apnea, respiratory distress, and laryngeal edema. Acute respiratory complications associated with administration have been reported.[Ref]


Musculoskeletal side effects have included arthralgia (42%).[Ref]


Dermatologic side effects have included rash (21%), pruritus, and urticaria.[Ref]


Ocular side effects have included conjunctivitis (21%) and corneal opacity/increased corneal opacification (11%).[Ref]


Gastrointestinal side effects have included gastroenteritis (11%), nausea, and vomiting.[Ref]

Nervous system

Nervous system side effects have included areflexia (11%), hearing impairment (11%), and headache.[Ref]


Cardiovascular side effects have included hypertension (11%). A risk of acute cardiorespiratory failure and the possible development of congestive heart failure have been reported.[Ref]


Immunologic side effects have included type III immune complex-mediated reactions (including membranous glomerulonephritis). The development of anti-galsulfase (the active ingredient contained in Naglazyme) IgG antibodies have been reported in 98% of patients within 4 to 8 weeks of therapy.[Ref]


Renal side effects have included at least once case of membranous nephropathy during postmarketing experience. Renal biopsy revealed galsulfase-immunoglobulin complexes in the glomeruli.[Ref]

A patient with membranous nephropathy was successfully rechallenged and continued to receive galsulfase.[Ref]


Patients with thrombocytopenia have been successfully rechallenged and have continued to receive galsulfase (the active ingredient contained in Naglazyme) [Ref]

Hematologic side effects have included rare cases of thrombocytopenia during postmarketing experience.[Ref]


1. "Product Information. Naglazyme (galsulfase)." BioMarin Pharmaceutical Inc, Novato, CA.

It is possible that some side effects of Naglazyme may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.