The trial is the first of its kind in Australia and will take place at Wesley Medical Research in Brisbane led by Chief Investigator and neuropsychiatrist Dr Philip Mosley. Participants will complete two periods of treatment with either a medicinal cannabis drug or a placebo, with both investigators and participants unaware of treatment status until the end of the trial.

"There is already early evidence to support the successful treatment of Tourette syndrome with cannabinoids," said Professor Iain McGregor, Academic Director of the Lambert Initiative. "This clinical trial could have a major impact and greatly improve the lives of those living with Tourette syndrome."

"Given the public interest in therapeutic use of cannabis, it's important to conduct rigorous and methodologically-sound research," Dr Mosley said. "The purpose of this clinical trial is to investigate whether medicinal cannabis is a potential therapy for people with Tourette syndrome."