• Project status: Active
Doctor using pipettes (oil dropper)

This trial aims to evaluate the efficacy and safety of cannabidiol (CBD) to treat severe behavioural problems in children and adolescents with intellectual disability (ID).


We are seeking participants for a study of medicinal cannabis.

Medicinal cannabis may be helpful for behavioural problems in children with intellectual disability. This study is a placebo-controlled trial of cannabidiol (CBD). CBD is a legal extract from the cannabis plant. It does not cause a “high” and it is not addictive.

Suitable participants must:

  • Be aged six to 18 years.
  • Have an intellectual disability (IQ less than 70).
  • Have severe behaviour problems, such as irritability, self-injury, aggression, screaming.
  • Live in Victoria or New South Wales and be willing to attend study visits at the trial hospital.

Information for participants

Half the participants will get CBD oil and half will get placebo (just oil, with no CBD).

Neither the researchers nor the families will know which one the participants receive. The trial lasts for 10 weeks. Your child can stay on any medications that they are already taking, as long as there are no changes during the trial and they aren’t taking a medication known to interact with CBD.

Get in touch today if you think your child may be eligible to participate and would like further information. Please include your postcode, your child’s diagnosis, IQ range (if known), and any current medications.

Please note that only children who meet the inclusion criteria can be included. The research team are unable to respond to queries outside the scope of this trial.

Contact us

Medical cannabis (CBD) to treat behavioural problems in children with intellectual disability (ID)
Murdoch Children's Research Institute
The Royal Children's Hospital
50 Flemington Road
Parkville VIC 3052


child in hospital

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