Skip to content
My WebMD Sign In, Sign Up

interferon alfa-2b injection

Does interferon alfa-2b injection have side effects?

The following side effects are associated with interferon alfa-2b injection:

Common side effects of interferon alfa-2b injection:

Stomach CrampsSevere
Abnormal Liver Function TestsSevere
AnemiaSevere
Decreased Blood PlateletsSevere
Decreased White Blood CellsSevere
Dry MouthLess Severe
Hair LossLess Severe
DizzyLess Severe
Low EnergyLess Severe
Flu-Like SymptomsLess Severe
Taste ProblemsLess Severe
RashLess Severe
Loss of AppetiteLess Severe
Weight LossLess Severe
Trouble BreathingLess Severe
Feel Like Throwing UpLess Severe
Throwing UpLess Severe
DiarrheaLess Severe
Numbness and TinglingLess Severe

Infrequent side effects of interferon alfa-2b injection:

Toxic Effect on Brain or Spinal Cord FunctionSevere
Numbness, Tingling or Pain of Hands or FeetSevere
Abnormally Low Blood PressureSevere
PneumoniaSevere
Herpes Simplex InfectionSevere
Hepatitis caused by DrugsSevere
Chest PainSevere
Decreased Function of Bone MarrowSevere
Decreased Neutrophils a Type of White Blood CellSevere
Blurred VisionLess Severe
Dry SkinLess Severe
Leg CrampsLess Severe
Chronic Trouble SleepingLess Severe
Excessive SweatingLess Severe
Fast HeartbeatLess Severe
ConfusedLess Severe
AnxiousLess Severe

Rare side effects of interferon alfa-2b injection:

DepressionSevere
Any Disorder of the BrainSevere
Detachment of the Retina of the EyeSevere
Disease of the Retina of the EyeSevere
Sudden Blindness and Pain Upon Moving the EyeSevere
PancreatitisSevere
Hearing LossSevere
Heart AttackSevere
Increased Pressure of Pulmonary CirculationSevere
Disease of the Muscle of the Heart with EnlargementSevere
Abnormal Heart RhythmSevere
StrokeSevere
VasculitisSevere
Thrombotic Thrombocytopenic PurpuraSevere
Inflammation & Obstruction of Smallest Breathing PassagesSevere
Interstitial PneumonitisSevere
X-Ray Results showing Lung Tissue ChangesSevere
Nephrotic SyndromeSevere
Kidney DiseaseSevere
Erythema MultiformeSevere
Toxic Epidermal NecrolysisSevere
Stevens-Johnson SyndromeSevere
Systemic Lupus ErythematosusSevere
Rheumatoid ArthritisSevere
Serious Muscle Damage that may Lead to Kidney FailureSevere
HallucinationSevere
High Amount of Bilirubin in the BloodSevere
Signs and Symptoms at Injection SiteSevere
SarcoidosisSevere
Overactive Thyroid GlandSevere
Underactive ThyroidSevere
Hemolytic AnemiaSevere
Low Platelet Count and Bleeding from Immune ResponseSevere
Mental Disorder with Loss of Normal Personality & RealitySevere
Having Thoughts of SuicideSevere
Thoughts of Hurting or Killing OthersSevere
Aggressive BehaviorLess Severe
Optic Disk EdemaLess Severe
Occasional Numbness, Prickling, or Tingling of Fingers and ToesLess Severe
Any Disease of the TeethLess Severe
Canker SoreLess Severe
Cannot Focus ThoughtsLess Severe
Loss of MemoryLess Severe
Puffy Face from Water RetentionLess Severe

See 47 Reviews for this Drug. - OR -

Review this Treatment

Find a Drug:

by name or medical condition or shape/color (Pill Identifier)

(for example: aspirin)

(for example: diabetes)

Report Problems to the Food and Drug Administration
 
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Ask the pharmacist

Questions about medications? Get expert answers by video or live chat about allergies, pregnancy, sleep, and more.
See the Ask the Pharmacist event schedule.

Ask a Question

Popular Slideshows & Tools on WebMD

hands on abdomen
Can you catch one?
Woman sitting in front of UV lights
Is yours working?
woman using breath spray
What's causing yours?
womans hand on abdomen
Are you ready for baby?
MS Overview
Recognizing symptoms.
bowl of yogurt with heart shape
Eat for a healthy heart.
woman doing pushups
To help you get fit.
Colored x-ray of tooth decay
Know what to look for.
Woman sitting with child
Do you know the symptoms?
mosquito
Stings, bites, burns, and more.
Allentown, PA
Are you living in one?
Thyroid exam
See how much you know.

Women's Health Newsletter

Find out what women really need.

WebMD the app

Get trusted health information. Whenever. Wherever... with your iPhone, iPad or Android.

Find Out More

IMPORTANT: About This Section and Other User-Generated Content on WebMD

The opinions expressed in WebMD User-generated content areas like communities, reviews, ratings, or blogs are solely those of the User, who may or may not have medical or scientific training. These opinions do not represent the opinions of WebMD. User-generated content areas are not reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other reason except for compliance with our Terms and Conditions. Some of these opinions may contain information about treatment or uses of drug products that have not been approved by the U.S. Food and Drug Administration. WebMD does not endorse any specific product, service, or treatment.

Do not consider WebMD User-generated content as medical advice. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of something you have read on WebMD. You should always speak with your doctor before you start, stop, or change any prescribed part of your care plan or treatment. WebMD understands that reading individual, real-life experiences can be a helpful resource but it is never a substitute for professional medical advice, diagnosis, or treatment from a qualified health care provider. If you think you may have a medical emergency, call your doctor or dial 911 immediately.