"The marijuana plant contains over 100 chemical compounds called cannabinoids. Of these, the compounds of greatest interest are tetrahydrocannabinoid (THC), and cannabidiol (CBD). THC is a psychoactive compound, use of which leads to a “high” including symptoms of euphoria and memory loss. There are also effects on coordination and perception. CBD is not psychoactive, although it does have effects in the brain."
"In the absence of results from well-designed and carefully conducted studies there is no clinical guidance on the use of cannabinoids in people with autism spectrum disorder. For example, there is limited information on the dose schedule, adverse effects, target symptoms or treatment duration."
"The psychoactive form of medical marijuana, or THC, has also been used by families in the autism community. When Colorado legalized recreational marijuana there were reports of families moving there to obtain it legally. There are many known adverse effects of THC, such as increased anxiety, psychotic thinking and cyclic vomiting. Because of its psychoactive properties parents should be very cautious about giving THC to their children. It should not be smoked, as there is evidence that smoking marijuana is linked to lung cancer. Some parents have reported giving their children THC-containing “edibles”. However, THC may have serious side effects in children and should be ingested only under strict medical supervision."
"Parents and autistic adults should carefully consider the costs, risks and benefits of a drug that has not been proven effective or safe."