At this time, only Methadone (C-II) products can be ordered online via CSOS, our online ordering portal. We will be launching an online ordering option for Buprenorphine (C-III) products Kloxxado® (naloxone HCl) nasal spay 8 mg soon and will notify customers when it becomes available. In the meantime, please use our ATS Product Order Form to order C-III products.