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:
Abdominal or stomach pain
break in the skin at the injection site, with blue-black discoloration, swelling, or drainage of fluid
headache or migraine
irregular or pounding heartbeat
redness, pain, or feeling of heat at the injection site
Bloody or cloudy urine
changes in vision
cold hands and feet
difficult, burning, or painful urination
fast or racing heartbeat
frequent urge to urinate
unusual weight gain
Abnormal growth in the breast
benign lumps in the breast
bloating or swelling
changes in menstrual periods
cyst (abnormal growth filled with fluid or semisolid material)
decreased sexual ability in males
dry, puffy skin
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:
loss of voice
menstrual pain or other changes
unusual tiredness or weakness
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.