This Neurology Grand Round was conducted in Omid Hospital conference hall in Mashhad by Medisa Ara Gostar department, on 11 October 2021. In this event, about 10 of outstanding professors and 28 residents and fellowships were participated. The significant applications of CBD (Cannabidiol) with anti-tumor activities included, decreasing of pain, and other side-effects such as nausea, vomiting, and fatigue in cancer patients was expressed. In addition, the Hydroxo cobalamin liposomal and its superiorities upon other three forms of cobalamin to threat the patients with MMA disorders (deficiency of vitamin B12) was introduced.