Marvelon 21 and Peginterferon beta-1a

• Generic Name: desogestrel / ethinyl estradiol
• Dosage Forms: n.a.
• Other Brand Names: Azurette, Cyclessa, Desogen, Isibloom, Kariva, Mircette, Reclipsen, Cyred

Desogestrel and ethinyl estradiol combination is used to prevent pregnancy. It is a birth control pill that contains two types of hormones, desogestrel and ethinyl estradiol, and when taken properly, prevents pregnancy. It works by stopping a woman's egg from fully developing each month. The egg can no longer accept a sperm and fertilization (pregnancy) is prevented.

No contraceptive method is 100 percent effective. Birth control methods such as having surgery to become sterile or not having sex are more effective than birth control pills. Discuss your options for birth control with your doctor.

This medicine does not prevent HIV infection or other sexually transmitted diseases. It will not help as emergency contraception, such as after unprotected sexual contact.

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

• Generic Name: peginterferon beta-1a
• Dosage Forms: n.a.
• Other Brand Names: Plegridy, Plegridy Pen, Plegridy Pen Starter Pack, Plegridy Starter Pack

Peginterferon beta-1a is used to treat relapsing multiple sclerosis (MS) in adults who are 18 to 65 years old.

peginterferon beta-1a will not cure MS, it will only decrease the frequency of relapse symptoms.

Peginterferon beta-1a may also be used for purposes not listed in this medication guide.