Ketamine is used as an anaesthetic in human and veterinary medicine. It is also used on the recreational drug scene and can produce feelings of relaxation, detachment and euphoria. People may also have psychedelic experiences.

Nitrous Oxide

Nitrous oxide is a gas with anaesthetic and pain-relieving properties. It has been used in medicine such as midwifery and dentistry, and as a recreational drug since the late 1700s. Nitrous oxide is commonly used in the catering industry as an aerosol spray propellant for cartridges of squirty cream.