Xalatan Sterile Ophthalmic Solution (Pharmacia & Upjohn) Xanax XR Tablets (Pharmacia & Upjohn) Xeloda Tablets (Roche Laboratories) Xenaderm Ointment (Healthpoint) Xenazine (tetrabenazine) Tablets (Cambridge Laboratories) Xenical Capsules (Roche Laboratories) Xerac AC Solution (Person & Covey) Xifaxan Tablets (Salix) Xigris Powder for Intravenous Infusion (Lilly) Xolair (Genentech) Xopenex HFA Inhalation Aerosol (Sepracor) Xopenex Inhalation Solution (Sepracor) Xopenex Inhalation Solution Concentrate (Sepracor)