NO PAIN , please !

Hi my friend,
My brother has just gone through an operation with general anaesthesia...almost no pain.
1,804 years ago ( AD 201 ) a famous Chinese physician in china known as Hua Tuo, operated a patient with Belladonna Alkaloid powder. That patient 'slept for 3 hours' and awaken with appendicitis operated.
That plant is still available now. We are very lucky to have modern medicine and science to operate with better and safer pain relief and 'sleep' well through it.
That plant look like this: ( See the purple flowers; please do not try to use it now. it is poisonous...it kill worms and other living things readily. If you like to sleep like Juliet in the famous Romeo and Juliet cast, tell me to fidn the right dosage)