This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Avonex (Interferon Beta-1A) and submitted to the FDA during the sample period of about a year. The information is not vetted and should not be considered as verified clinical evidence.
Reports by Event Outcome
All Cases (9774)
Death (480)
Life Threatening Events (15)
Disability (8)
Reports by Reaction Type
Influenza Like Illness (821),
Multiple Sclerosis Relapse (734),
Fall (726),
Gait Disturbance (517),
Fatigue (437),
Pain (399),
Headache (357),
Memory Impairment (355),
Injection Site Pain (335),
Injection Site Haemorrhage (316),
Hypoaesthesia (305),
Asthenia (300)
Below are a few examples of reports where side effects / adverse reactions may be related to Avonex (Interferon Beta-1A). For a complete list or a specific selection of reports, please use the links above.
Possible Avonex side effects in 50 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 50 year old female
Reactions: Impaired Gastric Emptying
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 19 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 19 year old male
Reactions: Blindness Unilateral, Multiple Sclerosis
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 30 year old female
Reported by a consumer/non-health professional from Brazil on 2012-08-27
Patient: 30 year old female, weighing 71.0 kg (156.2 pounds)
Reactions: Caesarean Section
Drug(s) suspected as cause:
Avonex
Other drugs received by patient: Noripurum (Ferric Hydroxide); Natale (Polyvitamins)
Possible Avonex side effects in 56 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 56 year old male
Reactions: Injection Site Haemorrhage
Drug(s) suspected as cause:
Avonex
Start date: 2001-07-02
Avonex
Indication: Multiple Sclerosis
Avonex
Start date: 1996-03-01
Possible Avonex side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Back Pain, Fatigue, Visual Impairment, Hypersomnia
Drug(s) suspected as cause:
Avonex
Start date: 2009-04-13
Avonex
Indication: Multiple Sclerosis
Possible Avonex side effects in 54 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 54 year old female
Reactions: Head Injury, Laceration, Fall
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Start date: 2009-06-01
Avonex
Start date: 2003-08-01
End date: 2004-04-01
Avonex
Indication: Multiple Sclerosis
Possible Avonex side effects in 43 year old female
Reported by a consumer/non-health professional from Germany on 2012-08-27
Patient: 43 year old female
Reactions: Impaired Healing, Intestinal Obstruction, Ovarian Neoplasm, HIP Surgery, Post Procedural Infection
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Other drugs received by patient: Morphine; Morphine
Possible Avonex side effects in 59 year old male
Reported by a physician from United States on 2012-08-27
Patient: 59 year old male
Reactions: Neoplasm Malignant
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 66 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 66 year old female
Reactions: Eye Swelling
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 41 year old female
Reported by a physician from United States on 2012-08-27
Patient: 41 year old female
Reactions: Anxiety, Pain
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Start date: 2012-08-10
Avonex
Indication: Multiple Sclerosis
Start date: 1999-07-01
End date: 2000-07-01
Avonex
Start date: 2011-11-04
End date: 2011-12-30
Avonex
Start date: 2010-10-24
End date: 2011-02-01
Possible Avonex side effects in 24 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 24 year old female
Reactions: Blepharospasm, Alopecia, Multiple Sclerosis Relapse, Scar
Drug(s) suspected as cause:
Avonex
Indication: Multiple Sclerosis
Start date: 2010-09-28
End date: 2011-03-01
Avonex
Start date: 2012-01-28
Possible Avonex side effects in 41 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 41 year old female
Reactions: Night Sweats, Decreased Appetite, Influenza Like Illness
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: , weighing 2.0 kg (4.4 pounds)
Reactions: LOW Birth Weight Baby, Maternal Drugs Affecting Foetus
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 60 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 60 year old female
Reactions: Pneumonia, Myocardial Infarction, Cerebrovascular Accident
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Indication: Multiple Sclerosis
Start date: 1999-10-01
End date: 2003-08-01
Avonex
Start date: 2003-08-01
End date: 2006-03-01
Avonex
Start date: 2008-01-01
Possible Avonex side effects in 58 year old female
Reported by a physician from United States on 2012-08-27
Patient: 58 year old female, weighing 71.0 kg (156.2 pounds)
Reactions: Pancreatitis Acute, Abdominal Pain, Biliary Tract Operation, Post Procedural Complication, Pain, Headache, Multiple Sclerosis Relapse, Hepatomegaly, Liver Function Test Abnormal, Depression, Muscle Spasms, Renal Failure Acute, Pneumonia, Urinary Tract Infection, Small Intestinal Obstruction, Asthenia
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Start date: 2008-10-24
End date: 2010-11-30
Avonex
Start date: 2012-08-17
Avonex
Indication: Multiple Sclerosis
Start date: 2006-06-08
End date: 2006-08-20
Avonex
Avonex
Start date: 2011-01-01
Other drugs received by patient: Zoloft; Methadone HCL; Tysabri; Doragesic (Orphenadrine Citrate, Paracetamol); Doragesic (Orphenadrine Citrate, Paracetamol); Sertraline Hydrochloride; Ampyra; Primidone; Tizanidine Hydrochloride; Gabapentin
Possible Avonex side effects in female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-08-27
Patient: female
Reactions: Cognitive Disorder
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in female
Reported by a physician from United States on 2012-08-27
Patient: female, weighing 92.0 kg (202.4 pounds)
Reactions: Coronary Arterial Stent Insertion, Somnolence, Myocardial Infarction, Stress, Hypertension, Convulsion, Cardiac Disorder
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Start date: 2005-02-01
End date: 2005-05-01
Avonex
Indication: Multiple Sclerosis
Other drugs received by patient: Glucosamine Vitamin; Lipitor; Neurontin; Requip; Aspirin; Prozac; Synthroid; Prim Rose OIL
Possible Avonex side effects in 38 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 38 year old male
Reactions: Gait Disturbance, Influenza Like Illness
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Paralysis
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 39 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 39 year old female
Reactions: Pneumonia, Pulmonary Thrombosis
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Avonex
Indication: Multiple Sclerosis
Possible Avonex side effects in 47 year old female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-08-27
Patient: 47 year old female
Reactions: Cardiac Operation, Paraesthesia, Suicidal Ideation, Mental Impairment, Nephrolithiasis, Mental Disorder, Depression, Memory Impairment, Myocardial Infarction
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Indication: Multiple Sclerosis
End date: 2008-04-25
Avonex
Possible Avonex side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Blepharospasm, Balance Disorder
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 52 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 52 year old female
Reactions: Dislocation of Vertebra, Fall, Loss of Consciousness
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Indication: Multiple Sclerosis
Start date: 2002-01-01
End date: 2003-07-01
Avonex
Start date: 2011-08-25
Avonex
Start date: 2003-01-01
Possible Avonex side effects in 59 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 59 year old female
Reactions: Injection Site Haemorrhage
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 38 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 38 year old female
Reactions: Contusion, Lower Extremity Mass
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 60 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 60 year old female
Reactions: Breast Cancer
Drug(s) suspected as cause:
Avonex
Other drugs received by patient: Interferons (Nos); Copaxone; Hormone Replacement Therapy
Possible Avonex side effects in 28 year old female
Reported by a consumer/non-health professional from Belgium on 2012-08-27
Patient: 28 year old female
Reactions: Intervertebral Disc Protrusion
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 55 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 55 year old female
Reactions: Breast Cancer Stage II
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 31 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 31 year old female
Reactions: Chills, Insomnia
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 56 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 56 year old female
Reactions: Loss of Control of Legs, Fall, Ankle Fracture, Convulsion, Dysarthria, Neoplasm Malignant, non-Hodgkin's Lymphoma, Memory Impairment
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
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