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Your healthcare provider is your best source of information, especially when choosing treatment. Together, you decide what treatment may work best for you. Download these questions to help get the conversation started at your next appointment.
Prescribing Information, including Boxed Warning and Medication Guide
PLEGRIDY® (peginterferon beta-1a) is a prescription medicine used to treat relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.
It is not known if PLEGRIDY is safe and effective in people under 18 or over 65 years of age.
See how PLEGRIDY was shown in clinical studies to impact:
Do not take PLEGRIDY if you are allergic to interferon beta or peginterferon, or any of the other ingredients in PLEGRIDY.
Find out more about PLEGRIDY >
Learn more about how PLEGRIDY has been shown to treat relapsing forms of MS in clinical trials.
Start a conversation with your doctor about your relapsing MS treatment.
Learn more about the PLEGRIDY dosing schedule.
Before taking any treatment, it’s important to understand as much about it as possible. The Important Safety Information for a treatment describes possible side effects you may experience. It also tells you what information you need to share with your doctor before starting treatment.
On this website, the Important Safety Information appears on each specific treatment page. You'll also find the Indication, which explains the specific condition that the medication was approved to treat by the FDA.