Cannabis anaesthetics

Inhalation (IH) The administration of volatile gases and vapours, followed by drug absorption in the lungs or nasal mucosa. Examples include general anaesthetics like nitrous oxide, nicotine from the tar droplets in tobacco smoke, cannabinoids from cannabis leaf smoke and various opiates from burning opium resin. 

CANNABIS ANAESTHETICS-LOCAL-LIDOCAINE Unpredictable changes in plasma concentrations. Risk of toxicity or therapeutic failure with intravenous lidocaine Induction or inhibition of CYP3A4-mediated metabolism by cannabis. It is not yet known whether the effects are dependent on the degree of cannabis consumption Be aware. Watch for signs of toxicity, especially when cannabis use abruptly changes... 

In ancient China, Cannabis was used together with other herbs for rheumatic pains, disorders of the female reproductive tract, absent-mindedness, malaria (probably for the headache caused by the disease) as well as for beri-beri [3, 16-18]. When however, the fruits of hemp were taken in excess, it was known that they could cause seeing devils . Cannabis in wine was used as an anaesthetic in major operations [19]. As Cannabis is only a minor pain killer, one can assume that large stupefying doses were administered. 

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