(Reuters Health) – People who buy medical marijuana online may not necessarily get exactly what they expect when their package arrives in the mail, new research suggests.
Online, almost 70 percent of products made from cannabidiol – a marijuana plant extract also called CBD – had higher or lower concentrations of this drug than the label described, researchers report in JAMA. Too little or too much CBD can be unsafe or ineffective.
For the study, researchers searched online for medical marijuana products and bought 84 products marketed as containing CBD from 31 different companies.
Roughly one in five of the products also contained THC, the chemical in cannabis that makes gives people a high. Medical CBD shouldn’t contain THC, an ingredient that may be harmful to vulnerable patients including children and infants who use medical marijuana, said lead study author Marcel Bonn-Miller of the University of Pennsylvania Perelman School of Medicine in Philadelphia.
“CBD extracts are often used by people with seizures, anxiety, sleep problems, and autism, as well as pain and inflammation,” Bonn-Miller said