The Physician came back with three vials and a bowl. Each of those vials contained the pills of different colors.
He placed the bowl on a table and put one pill from each vial into the bowl.
He started crushing each of those pills into the powder inside the bowl.
He again walked back to another room and came back with a glass of water and a spoon.
He spilled the water inside the bowl and started mixing the water and the three colored powder with a spoon.
The colors started mixing, and the water started changing color. In the end, the water became a grey colored liquid.
"Your Highness, this is the medicine for sleep and to relieve pain. It will end his pain, but it would also put him to sleep. He would sleep while his body counters the side effect of lack of life force. He would wake up after a few days after his body heals," The Physician said.