About peginterferon beta a
Pegylated interferon beta-1a
Used for
- Treats relapsing forms of multiple sclerosis in adults.
Usual adult dose
125 micrograms by injection every 14 days after gradual dose escalation.
Common side effects
- Flu-like symptoms, including fever, chills, headache, and muscle aches
- Injection-site redness, pain, itching, or swelling
- Liver enzyme increases
- Low white blood cell counts
Important warnings
- May cause serious liver injury; liver tests may be needed.
- Can worsen depression or cause suicidal thoughts.
- Rarely causes severe allergic reactions or serious skin reactions.
- Use caution with seizure disorders, heart disease, or low blood counts.
Pregnancy
Discuss with a clinician before use during pregnancy; treatment may need reassessment.
Breastfeeding
Available evidence is limited; discuss potential benefits and risks with a clinician.
Interactions
- Other medicines that can damage the liver may increase liver-injury risk.
- Other medicines affecting blood counts may increase monitoring needs.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.