Description and Brand Names

Drug information provided by: Micromedex

US Brand Name

  1. Plegridy
  2. Plegridy Pen
  3. Plegridy Pen Starter Pack
  4. Plegridy Starter Pack


Peginterferon beta-1a injection is used to treat the relapsing forms of multiple sclerosis (MS). This medicine will not cure MS, but it may slow some of the disabling effects and decrease the number of relapses of the disease. Peginterferons are natural substances that are produced in the body to help fight infections. Peginterferon beta-1a is a synthetic (man-made) version of these substances.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Solution