It is one of the constituents of althesin.
It is used in veterinary practice under the tradename Alfaxan. 
It is licensed for use in both dogs and cats.
Unlike some of its predecessors alfaxalone is not associated with histamine release and anaphylaxis.
A study 1987 found the primary mechanism for the anaesthetic action of alfaxalone to be modulation of neuronal cell membrane chloride ion transport, induced by binding of alfaxalone to GABAA cell surface receptors. 
Alfaxalone is metabolised rapidly in the liver. Alfaxalone has a very short plasma elimination half-life in dogs and cats.
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