Mylan was a global pharmaceutical company that produced generic, branded, and biosimilar drugs, as well as OTC remedies. In November 2020, Mylan merged with Upjohn, a division of Pfizer, to form Viatris. Mylan is also the name of a medication that co...ntains estrogen and progestin, which are female hormones that prevent ovulation and cause changes to the uterus and cervix.