“If you’re taking Prozac or some other medication, you really need to think carefully about what you’re doing, because it can harm you, and you should talk to your doctor about it,” says Blessing. Blessing does note that while the drug interactions are potentially very serious, the doses in consumer CBD products are so low that the risk is likely minimal. Regardless, the fact that CBD has drug interactions should indicate that it is, at least sometimes, in some doses, actually doing something.
One of the strongest nutraceutical CBD oils is called Charlotte’s Web, with a 50mg dose. Charlotte’s Web is produced in Colorado by the Stanley Brothers, and named after Charlotte Figi, a girl who became famous in the US after her frequent seizures, brought on by the rare Dravet syndrome, were greatly reduced when she started taking CBD oil aged five. The company makes THC products too and is extremely successful, having just offered shares on the Canadian securities exchange, raising about $100m.