East Coast trainer Michael Matz concluded a seven-day suspension for an acepromazine positive from January at Gulfstream Park. He was also fined $1,000.

Racing Australia had "recently become aware" of the use of acepromazine for track work and had begun collecting data about the practice, but had not been made aware of any complaints or concerns.

These workers say some horse trainers across the country are giving their horses tranquillisers on an almost daily basis, including a substance called acepromazine, as a quick safety fix for ...

Racing Australia had “recently become aware” of the use of acepromazine for track work and had begun collecting data about the practice, but had not been made aware of any complaints or concerns.