- Females of childbearing potential (FCBP) who receive cediranib alone must also have a negative initial and ongoing pregnancy tests as described above; FCBP who receive cediranib alone must also commit to continued abstinence from heterosexual intercourse or begin TWO acceptable methods of birth control, one highly effective method and one additional effective method AT THE SAME TIME, at least 28 days before she starts taking cediranib; men on cediranib alone must agree to use a latex condom during sexual contact with a FCBP even if they have had a successful vasectomy; all patients receiving cediranib alone must be counseled at a minimum of every 28 days about pregnancy precautions and risks of fetal exposure