Hypnorm is a neuroleptanalgesic for use in mice, rats, rabbits and guinea pigs. Fentanyl is an analgesic of the morphine type. Fluanisone is a neuroleptic of the butyrophenone group.

Satisfactory sedation, immobilisation and analgesia is obtained for minor operations and diagnostic techniques for which muscle relaxation is not required. It may be used in reduced quantities in conjunction with benzodiazepines to produce anaesthesia with muscle relaxation for major surgery.

In common with the use of other anaesthetic agents in small mammals, it is essential to maintain normothermia during any procedure.