- A female subject who is pregnant, nursing an infant or planning a pregnancy during the study [throughout the course of the study, women of child-bearing potential must use reliable forms of contraception (i.e., oral contraceptive, contraceptive patches/rings/implants Norplant®, Depo-Provera®, double-barrier methods (e.g. condoms and spermicide), abstinence, or vasectomies of partner with a documented second acceptable method of birth control should the subject become sexually active].