What is this medication?

HYALURONIDASE (hye al ur ON i dase) is a natural protein. It is used to improve the effects of other injectable medicines given with this medicine.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

COMMON BRAND NAME(S): Vitrase

What should I tell my care team before I take this medication?

They need to know if you have any of these conditions:

•allergy to bee stings or other insects

•infection in the area where injection is planned

•an unusual or allergic reaction to hyaluronidase, sheep proteins, beef proteins, thimerosal, other medicines, foods, dyes, or preservatives

•pregnant or trying to get pregnant

•breast-feeding

How should I use this medication?

This medicine is for injection under the skin or into a muscle. It is given by a health care professional in a hospital or clinic setting.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as newborn for selected conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

This does not apply.

What may interact with this medication?

•ACTH

•antihistamines for allergy or cold

•aspirin and aspirin-like medicines

•benzodiazepines for anxiety or sleep

•female hormones like estrogens

•furosemide

•phenytoin

•steroid medicines like prednisone or cortisone

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medication?

Your condition will be monitored carefully while you are receiving this medicine. Visit your doctor for check-ups as directed.

What side effects may I notice from receiving this medication?

Side effects that you should report to your doctor or health care professional as soon as possible:

•allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

•breathing problems

•chest pain

•chills

•fast, irregular heartbeat

•feeling faint or lightheaded, falls

•nausea or vomiting

•swelling at site where injected

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

•inflammation, redness or pain at site where injected

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Where should I keep my medication?

This drug is given in a hospital or clinic and will not be stored at home.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.