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 female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: White Blood Cell Count Decreased, Loss of Control of Legs, Multiple Sclerosis Relapse
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Start date: 2003-01-01
End date: 2011-03-01
Avonex
Indication: Multiple Sclerosis
Start date: 2001-04-05
End date: 2003-01-01
Possible Avonex side effects in 70 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 70 year old female
Reactions: Death
Adverse event resulted in: death
Drug(s) suspected as cause:
Avonex
Avonex
Indication: Multiple Sclerosis
Possible Avonex side effects in 52 year old male
Reported by a physician from France on 2012-08-27
Patient: 52 year old male
Reactions: Renal Failure, Thrombotic Microangiopathy, Hypertension
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: Formication
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 72 year old male
Reported by a physician from United States on 2012-08-27
Patient: 72 year old male
Reactions: Knee Arthroplasty
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Start date: 2001-07-23
Avonex
Indication: Multiple Sclerosis
Avonex
Possible Avonex side effects in 47 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 47 year old female
Reactions: Injection Site Haemorrhage
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 33 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 33 year old female
Reactions: Mass, Injection Site Pain
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 22 year old female
Reported by a physician from India on 2012-08-27
Patient: 22 year old female
Reactions: Chills, Pyrexia
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Heart Rate Decreased
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Indication: Multiple Sclerosis
Start date: 1995-07-19
End date: 2012-01-01
Avonex
Other drugs received by patient: Gilenya
Possible Avonex side effects in 51 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 51 year old female
Reactions: Bone Fragmentation, Cervical Vertebral Fracture, Dysphonia, Fall
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
End date: 2010-07-06
Avonex
Indication: Multiple Sclerosis
Start date: 1997-07-07
End date: 2003-08-01
Avonex
Start date: 2011-11-15
Avonex
Start date: 2003-09-04
End date: 2004-07-01
Avonex
Start date: 2004-08-01
Possible Avonex side effects in 42 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 42 year old female
Reactions: Neck Pain, Musculoskeletal Pain, Nerve Compression, Influenza Like Illness
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: White Blood Cell Count Decreased, Urinary Tract Infection, Breast Cancer Stage III, Pyrexia, Constipation, Multiple Sclerosis Relapse, Fatigue, Respiratory Tract Infection, Influenza Like Illness, Influenza
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
Indication: Multiple Sclerosis
Start date: 2000-07-20
End date: 2003-01-01
Avonex
Start date: 2008-09-01
End date: 2009-01-01
Avonex
Start date: 2009-01-01
End date: 2010-05-01
Avonex
Start date: 2010-06-01
Avonex
Start date: 2003-01-01
End date: 2008-09-01
Other drugs received by patient: Flomax; Ampyra
Possible Avonex side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Central Nervous System Lesion, Blindness Unilateral
Drug(s) suspected as cause:
Avonex
Possible Avonex side effects in 48 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 48 year old female
Reactions: Agraphia, Drug Ineffective, Memory Impairment, Multiple Sclerosis Relapse
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Avonex
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
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