Bayside CIB acting inspector detective Paul Austin said some of the medication may have been taken to the Ipswich area.

"These drugs are specialised animal medications and are not meant for human usage, even small amounts could be harmful. I urge anyone with information in relation to their current whereabouts to contact Crime Stoppers," he said.

Dr Kidd said Torbugesic Tartrate and Ketamine were used for sedation and pain relief in large animals, but had been known to be used improperly by drug addicts.

Dr Kidd said the 24-hour hospital had increased security since the thefts, which she said were "very rare".

"It's unheard of in my 40 years of practice," she said.