C30 This Is Murder!
It's just a bowl of boiling water, so you don't need to boil it.
This kind of painkillers had a stronger effect. Not to mention humans, even if a cow drank it, it would quickly feel no pain.
To put it bluntly, this old man was not treating people, but using painkillers to make the patient not feel pain.
This way, the patient would think that his medicine was effective