There are some important differences between hemp CBD and cannabis CBD.

Hemp plants have significantly fewer cannabinoids than cannabis. That means that to get enough CBD, producers have to process many more hemp plants than they do when they get CBD from a cannabis plant. Some experts have said that hemp CBD could, therefore, introduce contaminants and impurities into the final product.

Others have argued that CBD is most effective when it interacts with other cannabinoids and terpenes found in cannabis plants. And since hemp plants are so low in these other, complementary chemicals, hemp CBD might not be quite as potent.

But on the plus side, hemp-derived CBD has historically been easier to get onto the legal market. That’s because although cannabis is illegal at the federal level, many farmers can legally grow hemp as an industrial crop. This means that it’s usually easier to produce CBD products from hemp than it is from cannabis plants.