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Specialty Drug

INTERFERON BETA-1b helps to decrease the number of multiple sclerosis attacks in people with relapsing forms of the disease. This medicine does not cure multiple sclerosis. The lowest GoodRx price for the most common version of Betaseron is around $6,350.07, 25% off the average retail price of $8,544.38. Compare interferon betas.

Prescription Settings

Betaseron Side Effects

What should I watch for?

Visit your doctor or health care professional for regular checks on your progress. You will need frequent blood checks.

Females of child-bearing age should use a reliable method of birth control. If you do get pregnant, immediately stop using the medicine, and contact your doctor or health care professional.

Flu-like symptoms are common with the medicine. Using this medicine at night may help. Ask your doctor or health care professional about taking acetaminophen or ibuprofen before your dose and for 24 hours after you receive your injection.

Common and Rare Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Abdominal or stomach pain

break in the skin at the injection site, with blue-black discoloration, swelling, or drainage of fluid

flu-like symptoms including chills, fever, generalized feeling of discomfort or illness, increased sweating, and muscle pain

headache or migraine

hives, itching, or swelling at the injection site

irregular or pounding heartbeat

redness, pain, or feeling of heat at the injection site

stuffy nose

Less common

Bloody or cloudy urine

breast pain

changes in vision

cold hands and feet

difficult, burning, or painful urination

fast or racing heartbeat

frequent urge to urinate

pain

pelvic pain

swollen glands

troubled breathing

unusual weight gain

Rare

Abnormal growth in the breast

benign lumps in the breast

bleeding problems

bloating or swelling

changes in menstrual periods

confusion

convulsions (seizures)

cyst (abnormal growth filled with fluid or semisolid material)

decreased sexual ability in males

dry, puffy skin

feeling cold

hyperactivity

increased muscle tone

increased urge to urinate

loss of memory

mental depression with thoughts of suicide

problems with speaking

red, itching, or swollen eyes

swelling of the front part of the neck

unusual weight loss

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Constipation

diarrhea

dizziness

loss of voice

menstrual pain or other changes

unusual tiredness or weakness

Less common

Anxiety

drowsiness

hair loss

vomiting

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

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

Other interferon betas

Other Conditions

Multiple Sclerosis

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