Drugs
Fun fact: cocaine is still used as a topical anaesthetic! In fact, in the US, it's approved under not one but two brand names! Names that gained recent approval at that.
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Feel free to use this info however you like. I just think it's interesting that cocaine is still used for this purpose when there have since been better topical anaesthetics.
Drugs
Incidentally, yes, those anaesthetics ending in -caine do tend to be related to cocaine in some way. Another fun fact for you.