Medications


Interferon Beta-1a Prefilled Syringe 30 mcg (0.5 mL)

Brands: Avonex

Uses

For multiple sclerosis.

Instructions

This medicine is given as an injection into a muscle.

Carefully follow the instructions for preparing this medicine before injection.

Read and make sure you understand the instructions for measuring dose and using syringe. If you have any questions, talk to your doctor, nurse, or pharmacist.

Do not dilute the medicine.

Always inspect the medicine before using.

The liquid should be clear or light yellow.

Do not use the medicine if it contains any particles or if it has changed color.

Keep medicine in refrigerator. Do not freeze. If frozen, throw away.

Protect medicine from light.

Take the medicine out of the refrigerator about 30 minutes before use to warm to room temperature.

Discard unused medicine after 30 days at room temperature.

Never use any medicine that has expired.

Please ask your doctor, nurse, or pharmacist how to discard unused medicines safely.

This medicine should be used at about the same time of day, preferably in the late afternoon or evening.

Using medicine before bedtime may lessen side effects.

You or a family member can be trained to give this medicine at home.

Change the location of the injection each time. Choose a location at least 1 inch from the last injection.

It is important that you keep taking each dose of this medicine on time even if you are feeling well.

If you forget to take a dose on time, take it as soon as you remember. If it is almost time for the next dose, do not take the missed dose. Return to your normal dosing schedule. Do not take 2 doses of this medicine at one time.

Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.

Tell your doctor if symptoms do not get better or if they get worse.

Keep all appointments for medical exams and tests while on this medicine.

Do not use more than 1 dose each week.

Cautions

Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.

Some patients on this medicine have developed severe, life-threatening infections. Please speak with your doctor about the risks and benefits of using this medicine.

This medicine is associated with a rare, but serious problem of the liver. Speak to your doctor about the early signs of liver problems and the benefits and risks of using this medicine.

Do not use the medication any more than instructed.

Please check with your doctor before drinking alcohol while on this medicine.

Call the doctor if there are any signs of confusion or unusual changes in behavior.

This medicine may reduce your body's ability to fight infections. Avoid contact with people with colds, flu or other infections. Contact your doctor if you develop fever, cough, sore throat, or chills.

Tell the doctor or pharmacist if you are pregnant, planning to be pregnant, or breastfeeding.

Call your doctor right away if you notice any unusual bleeding or bruising.

Used needles and syringes should be thrown away properly in a medical waste container. Ask your doctor or pharmacist if you need help.

Do not share this medicine with anyone who has not been prescribed this medicine.

Some patients have serious side effects from this medicine. Ask your pharmacist to show you the information from the Food and Drug Administration (FDA) and discuss it with you.

Side Effects

The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.

  • changes in the number of cells in the blood
  • lack of energy and tiredness
  • fever
  • fever or chills
  • flu-like symptoms
  • increased risk for an infection
  • pain, redness, swelling near injection
  • muscle pain
  • pain near injection site

Call your doctor or get medical help right away if you notice any of these more serious side effects:

  • unusual bruising or discoloration on skin
  • chest pain
  • changes in memory, mood, or thinking
  • confusion
  • depression or feeling sad
  • swelling of the legs, feet, and hands
  • high fever
  • fast or irregular heart beats
  • signs of liver damage (such as yellowing of eye or skin, dark urine, or unusual tiredness)
  • mood changes
  • seizures
  • shortness of breath
  • suicidal thoughts
  • blurring or changes of vision
  • sudden or unexplained weight gain

A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.

Extra

Please speak with your doctor, nurse, or pharmacist if you have any questions about this medicine.

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IMPORTANT NOTE: This document tells you briefly how to take your medicine, but it does not tell you all there is to know about it. Your doctor or pharmacist may give you other documents about your medicine. Please talk to them if you have any questions. Always follow their advice. There is a more complete description of this medicine available in English. Scan this code on your smartphone or tablet or use the web address below. You can also ask your pharmacist for a printout. If you have any questions, please ask your pharmacist. The display and use of this drug information is subject to Terms of Use. Copyright(c) 2022 First Databank, Inc.


© 2000-2022 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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