Description and Brand Names

Drug information provided by: IBM Micromedex

US Brand Name

  1. Lumizyme
  2. Myozyme


Alglucosidase alfa injection is an enzyme that treats infantile-onset Pompe disease, which is also called glycogen storage disease type II. Alglucosidase alfa contains a human enzyme called acid alpha-glucosidase. This enzyme helps with the digestion and absorption of glycogen. People with Pompe disease are not able to make enough of this enzyme.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Powder for Solution

Before Using

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 pediatric-specific problems that would limit the usefulness of alglucosidase alfa injection in children.


No information is available on the relationship of age to the effects of alglucosidase alfa injection in the geriatric population.


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.

Drug Interactions

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.

Other Interactions

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.

Other Medical Problems

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:

  • Breathing problems or
  • Cardiac hypertrophy (heart is larger than normal) or
  • Heart rhythm problems (eg, arrhythmia) or
  • Lung disease—Use with caution. May make these conditions worse.

Proper Use

A nurse or other trained health professional will give you or your child this medicine in a hospital. This medicine is given through a needle placed in one of your veins.

This medicine must be given slowly, so the needle will remain in place for a few hours. You or your child may also receive medicines to help prevent possible allergic reactions to the injection.


It is very important that your doctor check the progress of you or your child at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.

This medicine may cause chest pain, fever, chills, itching, hives or a rash, a fast heartbeat, flushing of the face, dizziness, fainting, or lightheadedness, trouble breathing, or swelling of the face, tongue, and throat within a few hours after it is given. Check with your doctor or nurse right away if you or your child have any of these symptoms.

This medicine may cause serious types of allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Call your doctor right away if you or your child have a rash, itching, hoarseness, lightheadedness, dizziness, or fainting, trouble breathing, trouble swallowing, or any swelling of your hands, face, or mouth after receiving this medicine.

Side Effects

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 or nurse immediately if any of the following side effects occur:

More common

  1. Blue lips, fingernails, or skin
  2. body aches or pain
  3. chest discomfort or pain
  4. chills
  5. cough
  6. difficult or labored breathing
  7. difficulty with swallowing
  8. dizziness
  9. dry, red, hot, or irritated skin
  10. ear congestion
  11. fast, pounding, or irregular heartbeat or pulse
  12. feeling of warmth
  13. fever
  14. headache
  15. hives, itching, or skin rash
  16. increased sweating
  17. irregular, fast, slow, or shallow breathing
  18. lightheadedness, dizziness, or fainting
  19. loss of voice
  20. nasal congestion
  21. pain
  22. pale skin
  23. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  24. rapid shallow breathing
  25. redness of the face, neck, arms, and occasionally, upper chest
  26. redness or pain at the catheter site
  27. runny nose
  28. shakiness in the legs, arms, hands, or feet
  29. slow or irregular heartbeat
  30. sneezing
  31. sore throat
  32. swollen, painful, or tender lymph glands in the neck, armpit, or groin
  33. tightness in the chest
  34. trembling or shaking of the hands or feet
  35. troubled breathing
  36. troubled breathing with exertion
  37. unusual bleeding or bruising
  38. unusual tiredness or weakness

Less common

  1. Blood in the urine
  2. convulsions
  3. decreased urine
  4. dry mouth
  5. increased thirst
  6. loss of appetite
  7. mood changes
  8. muscle pain or cramps
  9. nausea or vomiting
  10. numbness or tingling in the hands, feet, or lips
  11. pain in the groin or genitals
  12. sharp back pain just below the ribs

Incidence not known

  1. Blue-green to black skin discoloration
  2. blurred vision
  3. confusion
  4. dilated neck veins
  5. extreme fatigue
  6. heart stops
  7. inability to speak
  8. no breathing
  9. no pulse or blood pressure
  10. pain, redness, swelling, or sloughing of the skin at the place of injection
  11. seizures
  12. severe or sudden headache
  13. severe pain in the chest
  14. slurred speech
  15. sudden and severe weakness in the arm or leg on one side of the body
  16. sudden onset of severe breathing difficulty
  17. swelling of the face, fingers, feet, or lower legs
  18. temporary blindness
  19. unconscious
  20. weight gain

Some 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 common

  1. Abdominal or stomach pain
  2. acid or sour stomach
  3. belching
  4. body aches or pain
  5. change in hearing
  6. congestion
  7. constipation
  8. dryness or soreness of the throat
  9. ear discomfort or pain
  10. ear drainage
  11. earache
  12. feeling of constant movement of self or surroundings
  13. general feeling of discomfort or illness
  14. heartburn
  15. hoarseness
  16. indigestion
  17. muscle or bone pain, stiffness, or tightness
  18. muscle twitching
  19. redness of the skin
  20. redness or swelling in the ear
  21. sensation of spinning
  22. sore mouth or tongue
  23. stomach discomfort, upset, or pain
  24. tender, swollen glands in the neck
  25. upper abdominal or stomach pain
  26. voice changes
  27. welts
  28. white patches in the mouth or on the tongue

Less common

  1. Bloody nose
  2. sleepiness or unusual drowsiness

Incidence not known

  1. Burning, dry, or itching eyes
  2. discharge, excessive tearing
  3. muscle spasm
  4. redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid

Other 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.