- For men and women of childbearing potential, willingness to utilize adequate contraception and not become pregnant (or have their partner become pregnant) during the full course of the study. Adequate contraceptive measures include oral contraceptives (stable use for 2 or more cycles prior to Screening). IUD, Depo-Provera, Norplant System implants, bilateral tubal ligation, vasectomy, condom or diaphragm plus either contraceptive sponge, foam or jelly and abstinence.