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Important Safety Information

Who should not use AVONEX® (interferon beta-1a)?

  • Do not take AVONEX if you are allergic to interferon beta or any of the ingredients in AVONEX

Before beginning treatment, you should discuss with your healthcare provider the potential benefits and risks associated with AVONEX.

What is the most important information I should know about AVONEX?

AVONEX can cause serious side effects. Tell your healthcare provider right away if you have any of the symptoms listed below while taking AVONEX.

  • Depression, suicidal thoughts, hallucinations or other behavioral health problems. Some people taking AVONEX may develop mood or behavior problems including irritability (getting upset easily), depression (feeling hopeless or feeling bad about yourself), nervousness, anxiety, aggressive behavior, thoughts of hurting yourself or suicide, and hearing or seeing things that others do not hear or see (hallucinations)

If you have any of these mood or behavior problems, your healthcare provider may tell you to stop taking AVONEX.

  • Liver problems, or worsening of liver problems including liver failure and death. Tell your healthcare provider right away if you have any of these symptoms: Nausea, loss of appetite, tiredness, dark colored urine and pale stools, yellowing of your skin or the white part of your eye, bleeding more easily than normal, confusion, and sleepiness. During your treatment with AVONEX you will need to see your healthcare provider regularly and have regular blood tests to check for side effects. Tell your healthcare provider about all the medicines you take and if you drink alcohol before you start taking AVONEX
  • Serious allergic reactions and skin reactions. Serious allergic and skin reactions can happen when you take AVONEX. Symptoms of serious allergic and skin reactions may include itching, swelling of the face, eyes, lips, tongue or throat, trouble breathing, anxiousness, feeling faint, and skin rash, hives, sores in your mouth, or your skin blisters and peels

Get emergency help right away if you have any of these symptoms. Talk to your healthcare provider before taking another dose of AVONEX.

Before taking AVONEX, tell your healthcare provider about all of your medical conditions, including if you:

  • are being treated for a mental illness, or had treatment in the past for any mental illness, including depression and suicidal behavior
  • have or had bleeding problems or blood clots, have or had low blood cell counts, have or had liver problems, have or had seizures (epilepsy), have or had heart problems, have or had thyroid problems, have or had any kind of autoimmune disease (where the body’s immune system attacks the body’s own cells)
  • drink alcohol
  • have or have had an allergic reaction to rubber or latex. The tip cap of the AVONEX prefilled syringe and prefilled autoinjector Pen contain natural rubber latex
  • are pregnant or plan to become pregnant. It is not known if AVONEX can harm your unborn baby
  • are breastfeeding or plan to breastfeed. AVONEX may pass into your breastmilk. Talk with your healthcare provider about the best way to feed your baby if you take AVONEX

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

What are the possible side effects of AVONEX?

AVONEX can cause serious side effects, including:

  • Heart problems, including heart failure. Some people who did not have a history of heart problems developed heart muscle problems or congestive heart failure after taking AVONEX. If you already have heart failure, AVONEX may cause your heart failure to get worse. Call your healthcare provider right away if you have worsening symptoms of heart failure such as shortness of breath or swelling of your lower legs or feet while using AVONEX
    • Some people using AVONEX may have other heart problems including low blood pressure, fast or abnormal heartbeat, chest pain, and heart attack or heart muscle problem (cardiomyopathy)
  • Blood problems. AVONEX can affect your bone marrow and cause low red and white blood cell, and platelet counts. In some people, these blood cell counts may fall to dangerously low levels. If your blood cell counts become very low, you can get infections and problems with bleeding and bruising
  • Seizures. Some people have had seizures while taking AVONEX, including people who have never had seizures before. Tell your healthcare provider right away if you have a seizure
  • Thrombotic microangiopathy (TMA). TMA is a condition that involves injury to the smallest blood vessels in your body. TMA can also cause injury to your red blood cells (the cells that carry oxygen to your organs and tissues) and your platelets (cells that help your blood clot) and can sometimes lead to death. Your healthcare provider may tell you to stop taking AVONEX if you develop TMA
  • Autoimmune diseases. Problems with easy bleeding or bruising (idiopathic thrombocytopenia), thyroid gland problems (hyperthyroidism and hypothyroidism), and autoimmune hepatitis have happened in some people who use AVONEX

The most common side effects of AVONEX include:

  • Flu-like symptoms. Most people who take AVONEX have flu-like symptoms especially early during the course of therapy. Usually, these symptoms last for a day after the injection. Symptoms may include muscle aches, fever, tiredness, and chills

You may be able to manage these flu-like symptoms by taking over-the-counter pain and fever reducers. Talk with your healthcare provider about ways to help if you develop flu-like symptoms while taking AVONEX.

These are not all of the possible side effects of AVONEX.

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Please see full Prescribing Information and Medication Guide.

This information does not take the place of talking with your healthcare provider about your medical condition or your treatment.

What is AVONEX® (interferon beta-1a)?

AVONEX is a prescription medicine used to treat relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.

It is not known if AVONEX is safe and effective in children.

PLEGRIDY® (peginterferon beta-1a) Important Safety Information

Who should not take PLEGRIDY® (peginterferon beta-1a)?

  • Do not take PLEGRIDY if you are allergic to interferon beta or peginterferon, or any of the other ingredients in PLEGRIDY

What is the most important information I should know about PLEGRIDY?

PLEGRIDY can cause serious side effects, including:

  • Liver problems, or worsening of liver problems including liver failure and death. Symptoms may include yellowing of your skin or the white part of your eye, nausea, loss of appetite, tiredness, bleeding more easily than normal, confusion, sleepiness, dark colored urine, and pale stools. During your treatment with PLEGRIDY you will need to see your healthcare provider regularly. You will have regular blood tests to check for these possible side effects
  • Depression or suicidal thoughts. Symptoms may include new or worsening depression (feeling hopeless or bad about yourself), thoughts of hurting yourself or suicide, irritability (getting upset easily), nervousness, or new or worsening anxiety

Call your healthcare provider right away if you have any of the symptoms listed above.

Before taking PLEGRIDY, tell your healthcare provider about all of your medical conditions, including if you:

  • Are being treated for a mental illness or had treatment in the past for any mental illness, including depression and suicidal behavior
  • Have or had liver problems, low blood cell counts, bleeding problems, heart problems, seizures (epilepsy), thyroid problems, or any kind of autoimmune disease (where the body’s immune system attacks the body’s own cells)
  • Are pregnant or plan to become pregnant. It is not known if PLEGRIDY can harm your unborn baby
    • If you become pregnant while taking PLEGRIDY, talk to your healthcare provider about enrolling in the PLEGRIDY Pregnancy Registry. You can enroll in this registry by calling 1-866-810-1462 or visiting https://www.plegridypregnancyregistry.com/. The purpose of this registry is to collect information about the safety of PLEGRIDY during pregnancy
    • Are breastfeeding or plan to breastfeed. PLEGRIDY may pass into your breastmilk. Talk to your healthcare provider about the best way to feed your baby if you take PLEGRIDY

Tell your healthcare provider about all the medicines you take, including prescription and over the counter medicines, vitamins, and herbal supplements.

What are the possible side effects of PLEGRIDY?

PLEGRIDY may cause serious side effects, including:

  • seizures. Some people have had seizures while taking PLEGRIDY, including people who have never had seizures before
  • serious allergic reactions. Serious allergic reactions can happen if you take PLEGRIDY. Symptoms may include itching, swelling of the face, eyes, lips, tongue, or throat, trouble breathing, feeling faint, anxiousness, skin rash, hives, or skin bumps. Talk to your healthcare provider before taking another dose of PLEGRIDY
  • injection site reactions. PLEGRIDY may commonly cause redness, pain or swelling at the place where the injection was given. Call your healthcare provider right away if an injection site becomes swollen and painful or the area looks infected and it does not heal within a few days. You may have a skin infection or an area of severe skin damage (necrosis) requiring treatment by a healthcare provider
  • heart problems, including congestive heart failure. Call your healthcare provider right away if you have worsening symptoms of heart failure such as shortness of breath or swelling of your lower legs or feet while using PLEGRIDY
    • Some people using PLEGRIDY may have other heart problems, including low blood pressure, fast or abnormal heartbeat, chest pain, heart attack, or a heart muscle problem (cardiomyopathy)
  • blood problems and changes in your blood tests. PLEGRIDY can decrease your white blood cells or platelets, which can cause an increased risk of infection, bleeding, or anemia and can cause changes in your liver function tests. Your healthcare provider will do tests to monitor for side effects while you use PLEGRIDY
  • thrombotic microangiopathy (TMA). TMA is a condition that involves injury to the smallest blood vessels in your body. TMA can also cause injury to your red blood cells (the cells that carry oxygen to your organs and tissues) and your platelets (cells that help your blood clot) and can sometimes lead to death. Your healthcare provider may tell you to stop taking PLEGRIDY if you develop TMA
  • autoimmune diseases. Problems with easy bleeding or bruising (idiopathic thrombocytopenia), thyroid gland problems (hyperthyroidism and hypothyroidism), and autoimmune hepatitis have happened in some people who use interferon beta

The most common side effects of PLEGRIDY include:

  • flu-like symptoms. Many people who take PLEGRIDY have flu-like symptoms especially early in the course of therapy. These symptoms are not really the flu. You cannot pass it on to anyone else
    • You may be able to manage these flu-like symptoms by taking over-the-counter pain and fever reducers and drinking plenty of water

Flu-like symptoms or other common side effects of PLEGRIDY may include: headache, muscle and joint aches, fever, chills, or tiredness.

Talk with your healthcare provider about ways to help if you develop flu-like symptoms while taking PLEGRIDY.

These are not all of the possible side effects of PLEGRIDY.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Please see full Prescribing Information and Medication Guide.

This information does not take the place of talking with your healthcare provider about your medical condition or your treatment.

What is PLEGRIDY® (peginterferon beta-1a)?

PLEGRIDY is a prescription medicine used to treat relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.

It is not known if PLEGRIDY is safe and effective in people under 18 or over 65 years of age.

TYSABRI® (natalizumab) Important Safety Information and Indication

TYSABRI increases your risk of getting a rare brain infection—called progressive multifocal leukoencephalopathy (PML)—that usually leads to death or severe disability.

  • There is no known treatment, prevention, or cure for PML.
  • You should not take certain medicines that weaken your immune system at the same time you are taking TYSABRI. Even if you use TYSABRI alone to treat your MS, you can still get PML.
  • Your risk of getting PML is higher if you:
    • have received TYSABRI for a long time, especially for longer than 2 years
    • have received certain medicines that can weaken your immune system before you start receiving TYSABRI
    • have been infected by the John Cunningham Virus (JCV). Before or while you receive TYSABRI, your doctor may do a blood test to check if you have been infected by JCV. JCV is a common virus that can cause PML in people who have weakened immune systems, such as people taking TYSABRI.
  • Your risk of getting PML is greatest if you have all 3 risk factors listed above. There may be other risk factors that have not yet been identified.
  • Patients who are anti-JCV antibody negative are still at risk for the development of PML due to the potential for a new JCV infection or a false negative test result. Therefore, patients with a negative test result should be retested periodically.
  • While you receive TYSABRI, and for 6 months after you stop receiving TYSABRI, it is important that you call your doctor right away if you have any new or worsening medical problems (such as problems with your thinking, eyesight, balance, or strength; weakness on 1 side of your body; and using your arms and legs) that have lasted several days. Tell all of your doctors that you are getting treatment with TYSABRI.
  • Because of your risk of getting PML while you receive TYSABRI, TYSABRI is available only through a restricted distribution program called the TOUCH® Prescribing Program.
  • If you have PML or are allergic to TYSABRI or any of its ingredients, you should not receive TYSABRI.

Before receiving TYSABRI, it is important to tell your doctor:

  • If you have a medical condition that can weaken your immune system, such as HIV infection or AIDS, leukemia or lymphoma, organ transplant, or others, or if you have any new or worsening medical problems that have lasted several days.
  • If you are pregnant or plan to become pregnant or if you are breastfeeding or plan to breastfeed. It is not known if TYSABRI can harm your unborn baby or if the TYSABRI that passes into your breast milk can harm your baby.
  • About all of the medicines and supplements you take, especially medicines that can weaken your immune system. If you are not sure, ask your doctor.

TYSABRI can cause serious side effects. If you have any of the symptoms listed below, call your doctor right away:

  • Herpes infections. Increased risk of infection of the brain or the covering of your brain and spinal cord (encephalitis or meningitis) caused by herpes viruses that may lead to death. Symptoms include sudden fever, severe headache, or confusion. Infection of the eye caused by herpes viruses leading to blindness in some patients has occurred. Call your doctor if you have changes in vision, redness, or eye pain.
  • Liver damage. Symptoms of liver damage include yellowing of the skin and eyes (jaundice), unusual darkening of the urine, nausea, feeling tired or weak, or vomiting.
  • Allergic reactions (e.g., hives, itching, trouble breathing, chest pain, dizziness, wheezing, chills, rash, nausea, flushing of skin, low blood pressure), including serious allergic reactions (e.g., anaphylaxis). Serious allergic reactions usually happen within 2 hours of the start of the infusion, but they can happen any time after receiving TYSABRI.
  • Weakened immune system. TYSABRI may increase your risk of getting an unusual or serious infection.

The most common side effects of TYSABRI are:

  • Headache, urinary tract infection, lung infection, pain in your arms and legs, vaginitis, stomach-area pain, feeling tired, joint pain, depression, diarrhea, rash, nose and throat infections, and nausea. If you experience any side effect that bothers you or does not go away, tell your doctor.

These are not all of the possible side effects of TYSABRI. For more information, ask your doctor. To report side effects to FDA, please call 1-800-FDA-1088.

Please see full Prescribing Information including Boxed Warning and Medication Guide.

This information is not intended to replace discussions with your healthcare provider.

Indication

TYSABRI® (natalizumab) is a prescription medicine used to treat adults with relapsing forms of multiple sclerosis (MS) to slow the worsening of symptoms common in people with MS and to decrease the number of flare-ups (relapses). TYSABRI increases the risk of progressive multifocal leukoencephalopathy (PML). When starting and continuing treatment with TYSABRI, it is important to discuss with your doctor whether the expected benefit of TYSABRI is enough to outweigh this risk.

TECFIDERA® (dimethyl fumarate) Important Safety Information and Indication

Do not use TECFIDERA if you have had an allergic reaction (such as welts, hives, swelling of the face, lips, mouth or tongue, or difficulty breathing) to TECFIDERA or any of its ingredients.

Before taking and while you take TECFIDERA, tell your doctor about any low white blood cell counts or infections or any other medical conditions.

What are the possible side effects of TECFIDERA?

TECFIDERA may cause serious side effects including:

  • Allergic reactions
  • PML, which is a rare brain infection that usually leads to death or severe disability.
  • Decreases in your white blood cell count. Your doctor should check your white blood cell count before you take TECFIDERA and from time to time during treatment
  • Liver problems. Your doctor should do blood tests to check your liver function before you start taking TECFIDERA and during treatment if needed. Tell your doctor right away if you get any symptoms of a liver problem during treatment, including: 
    • severe tiredness 
    • loss of appetite  
    • pain on the right side of your stomach 
    • dark or brown (tea color) urine 
    • yellowing of your skin or the white part of your eyes 

The most common side effects of TECFIDERA include flushing and stomach problems. These can happen especially at the start of treatment and may decrease over time. Taking TECFIDERA with food may help reduce flushing. Call your doctor if these symptoms bother you or do not go away. Ask your doctor if taking aspirin before taking TECFIDERA may reduce flushing.

These are not all the possible side effects of TECFIDERA. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. For more information go to dailymed.nlm.nih.gov.

Tell your doctor if you are pregnant or plan to become pregnant, or breastfeeding or plan to breastfeed. It is not known if TECFIDERA will harm your unborn baby or if it passes into your breast milk. Also tell your doctor if you are taking prescription or over-the-counter medicines, vitamins, or herbal supplements. If you take too much TECFIDERA, call your doctor or go to the nearest hospital emergency room right away.

For additional Important Safety Information, please see full Prescribing Information and Patient Information. This is not intended to replace discussions with your doctor. 

Indication

Tecfidera® (dimethyl fumarate) is a prescription medicine used to treat people with relapsing forms of multiple sclerosis.

Important Safety Information

Who should not use AVONEX® (interferon beta-1a)?

  • Do not take AVONEX if you are allergic to interferon beta or any of the ingredients in AVONEX

Before beginning treatment, you should discuss with your healthcare provider the potential benefits and risks associated with AVONEX.

What is the most important information I should know about AVONEX?

AVONEX can cause serious side effects. Tell your healthcare provider right away if you have any of the symptoms listed below while taking AVONEX.

  • Depression, suicidal thoughts, hallucinations or other behavioral health problems. Some people taking AVONEX may develop mood or behavior problems including irritability (getting upset easily), depression (feeling hopeless or feeling bad about yourself), nervousness, anxiety, aggressive behavior, thoughts of hurting yourself or suicide, and hearing or seeing things that others do not hear or see (hallucinations)

If you have any of these mood or behavior problems, your healthcare provider may tell you to stop taking AVONEX.

  • Liver problems, or worsening of liver problems including liver failure and death. Tell your healthcare provider right away if you have any of these symptoms: Nausea, loss of appetite, tiredness, dark colored urine and pale stools, yellowing of your skin or the white part of your eye, bleeding more easily than normal, confusion, and sleepiness. During your treatment with AVONEX you will need to see your healthcare provider regularly and have regular blood tests to check for side effects. Tell your healthcare provider about all the medicines you take and if you drink alcohol before you start taking AVONEX
  • Serious allergic reactions and skin reactions. Serious allergic and skin reactions can happen when you take AVONEX. Symptoms of serious allergic and skin reactions may include itching, swelling of the face, eyes, lips, tongue or throat, trouble breathing, anxiousness, feeling faint, and skin rash, hives, sores in your mouth, or your skin blisters and peels

Get emergency help right away if you have any of these symptoms. Talk to your healthcare provider before taking another dose of AVONEX.

Before taking AVONEX, tell your healthcare provider about all of your medical conditions, including if you:

  • are being treated for a mental illness, or had treatment in the past for any mental illness, including depression and suicidal behavior
  • have or had bleeding problems or blood clots, have or had low blood cell counts, have or had liver problems, have or had seizures (epilepsy), have or had heart problems, have or had thyroid problems, have or had any kind of autoimmune disease (where the body’s immune system attacks the body’s own cells)
  • drink alcohol
  • have or have had an allergic reaction to rubber or latex. The tip cap of the AVONEX prefilled syringe and prefilled autoinjector Pen contain natural rubber latex
  • are pregnant or plan to become pregnant. It is not known if AVONEX can harm your unborn baby
  • are breastfeeding or plan to breastfeed. AVONEX may pass into your breastmilk. Talk with your healthcare provider about the best way to feed your baby if you take AVONEX

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

What are the possible side effects of AVONEX?

AVONEX can cause serious side effects, including:

  • Heart problems, including heart failure. Some people who did not have a history of heart problems developed heart muscle problems or congestive heart failure after taking AVONEX. If you already have heart failure, AVONEX may cause your heart failure to get worse. Call your healthcare provider right away if you have worsening symptoms of heart failure such as shortness of breath or swelling of your lower legs or feet while using AVONEX
    • Some people using AVONEX may have other heart problems including low blood pressure, fast or abnormal heartbeat, chest pain, and heart attack or heart muscle problem (cardiomyopathy)
  • Blood problems. AVONEX can affect your bone marrow and cause low red and white blood cell, and platelet counts. In some people, these blood cell counts may fall to dangerously low levels. If your blood cell counts become very low, you can get infections and problems with bleeding and bruising
  • Seizures. Some people have had seizures while taking AVONEX, including people who have never had seizures before. Tell your healthcare provider right away if you have a seizure
  • Thrombotic microangiopathy (TMA). TMA is a condition that involves injury to the smallest blood vessels in your body. TMA can also cause injury to your red blood cells (the cells that carry oxygen to your organs and tissues) and your platelets (cells that help your blood clot) and can sometimes lead to death. Your healthcare provider may tell you to stop taking AVONEX if you develop TMA
  • Autoimmune diseases. Problems with easy bleeding or bruising (idiopathic thrombocytopenia), thyroid gland problems (hyperthyroidism and hypothyroidism), and autoimmune hepatitis have happened in some people who use AVONEX

The most common side effects of AVONEX include:

  • Flu-like symptoms. Most people who take AVONEX have flu-like symptoms especially early during the course of therapy. Usually, these symptoms last for a day after the injection. Symptoms may include muscle aches, fever, tiredness, and chills

You may be able to manage these flu-like symptoms by taking over-the-counter pain and fever reducers. Talk with your healthcare provider about ways to help if you develop flu-like symptoms while taking AVONEX.

These are not all of the possible side effects of AVONEX.

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Please see full Prescribing Information and Medication Guide.

This information does not take the place of talking with your healthcare provider about your medical condition or your treatment.

What is AVONEX® (interferon beta-1a)?

AVONEX is a prescription medicine used to treat relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.

It is not known if AVONEX is safe and effective in children.

Important Safety Information

CONTRAINDICATIONS

  • AVONEX® (interferon beta-1a) is contraindicated in patients with a history of hypersensitivity to natural or recombinant interferon beta, or any other component of the formulation
  • The formerly available lyophilized vial formulation of AVONEX is contraindicated in patients with a history of hypersensitivity to albumin (human)

WARNINGS AND PRECAUTIONS

Depression, Suicide, and Psychotic Disorders

  • Patients treated with AVONEX and their caregivers should be advised to report immediately any symptoms of depression, suicidal ideation, and/or psychosis to their prescribing physician. If a patient develops depression or other severe psychiatric symptoms, cessation of AVONEX therapy should be considered. Depression and suicide have been reported to occur with increased frequency in patients receiving AVONEX. Additionally, there have been postmarketing reports of depression, suicidal ideation, and/or development of new or worsening of other pre-existing psychiatric disorders, including psychosis. For some of these patients, symptoms of depression improved upon cessation of AVONEX

Hepatic Injury

  • Severe hepatic injury, including cases of hepatic failure, has been reported rarely in patients taking AVONEX. Asymptomatic elevation of hepatic transaminases has also been reported, and in some patients has recurred upon rechallenge with AVONEX. In some cases, these events have occurred in the presence of other drugs that have been associated with hepatic injury. The potential risk of AVONEX used in combination with known hepatotoxic drugs or other products (e.g., alcohol) should be considered prior to starting AVONEX, or before starting hepatotoxic drugs. Patients should be monitored for signs of hepatic injury

Anaphylaxis and Other Allergic-Reactions

  • Anaphylaxis has been reported as a rare complication of AVONEX use. Other allergic reactions have included dyspnea, orolingual edema, skin rash and urticaria. Discontinue AVONEX if anaphylaxis or other allergic reactions occur

Congestive Heart Failure

  • Patients with pre-existing congestive heart failure should be monitored for worsening of their cardiac condition during initiation of and continued treatment with AVONEX. While beta interferons do not have any known direct cardiac toxicity, during the postmarketing period cases of congestive heart failure, cardiomyopathy, and cardiomyopathy with congestive heart failure have been reported in patients without known predisposition to these events, and without other etiologies being established

Decreased Peripheral Blood Counts

  • Decreased peripheral blood counts in all cell lines, including rare pancytopenia and thrombocytopenia, have been reported from postmarketing experience in AVONEX-treated patients

Thrombotic Microangiopathy

  • Cases of thrombotic microangiopathy (TMA), including thrombotic thrombocytopenic purpura and hemolytic uremic syndrome, some fatal, have been reported with interferon beta products, including AVONEX. Cases have been reported several weeks to years after starting interferon beta products. Discontinue AVONEX if clinical symptoms and laboratory findings consistent with TMA occur, and manage as clinically indicated

Seizures

  • Seizures have been temporally associated with the use of beta interferons in clinical trials and postmarketing safety surveillance. It is not known whether these events were related to the effects of multiple sclerosis alone, to AVONEX, or to a combination of both

Autoimmune Disorders

  • Postmarketing reports of autoimmune disorders of multiple target organs in AVONEX-treated patients included idiopathic thrombocytopenia, hyper- and hypothyroidism, and rare cases of autoimmune hepatitis. If AVONEX-treated patients develop a new autoimmune disorder, consider stopping the therapy

Laboratory Tests

  • In addition to those laboratory tests normally required for monitoring patients with multiple sclerosis, complete blood and differential white blood cell counts, platelet counts, and blood chemistries, including liver function tests, are recommended during AVONEX therapy. Patients with myelosuppression may require more intensive monitoring of complete blood cell counts, with differential and platelet counts. Thyroid function should be monitored periodically. If patients have or develop symptoms of thyroid dysfunction (hypo- or hyperthyroidism), thyroid function tests should be performed according to standard medical practice

MOST COMMON SIDE EFFECTS

  • The most commonly reported adverse reactions (at least 5% more frequent on AVONEX than on placebo) were flu-like symptoms. Symptoms can include chills, fever, myalgia and asthenia occurring within hours to days following an injection. The most frequently reported adverse reactions resulting in clinical intervention were flu-like symptoms and depression

Please see full Prescribing Information.

Indication

AVONEX® (interferon beta-1a) is indicated for the treatment of relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.

References: 1. Bermel RA, Weinstock-Guttman B, Bourdette D, et al. Intramuscular interferon beta-1a therapy in patients with relapsing-remitting multiple sclerosis: a 15-year follow-up study. Mult Scler. 2010;16(5):588-596. 2. AVONEX Prescribing Information. Cambridge, MA: Biogen. 3. Halpern R, Agarwal S, Dembek C, et al. Comparison of adherence and persistence among multiple sclerosis patients treated with disease-modifying therapies: a retrospective administrative claims analysis. Patient Prefer Adherence. 2011;5(1):73-84. 4. Data on file. Biogen.