Answer
No. It is a volatile inhaled analgesic related to fluorinated anaesthetic agents, used at analgesic rather than anaesthetic concentrations.
Sources for this answer
- PENTHROX 99.9%, 3 ml inhalation vapour, liquid — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.