Bhoja

According to Bhoja-Prabandha, early in his life, Bhoja suffered from intense headaches. Two Brahmin surgeons from Ujjain made him unconscious using an anaesthetic powder called moha-churna, opened his cranial bone, removed a tumor, and then made him regain his consciousness by administering another powder called sanjivani.

https://www.google.com/search?q=Bhoja