 - Female subjects of childbearing potential must have a negative urine pregnancy test on Day 1, and must agree to use method of contraception from the start of study drug use and for 30 days after discontinuation of study drug. Approved methods of contraception include, an IUD with spermicide, a female condom with spermicide, a diaphragm with spermicide, a cervical cap with spermicide, use of a condom with spermicide by sexual partner or a sterile sexual partner or oral contraceptives. 