5. A non-vasectomized subject must agree to use a condom with spermicide or abstain from sexual intercourse during the study until 90 days beyond the last dose of study drug. (No restrictions are required for a vasectomized male provided his vasectomy has been performed 4 months or more prior to first dose/dosing of study drug. A subject who has been vasectomized less than 4 months prior to study first dose/dosing must follow the same restrictions as a non-vasectomized male).