I just heard a lecture recently when the company tested a various amount of CBD in the marketplace and found that all of them contained some levels of THC in them (I don't currently have the literature and acknowledge that it may be splitting hairs). The level of THC may not be enough to affect the CB1 receptor (which creates the psychoactive responses), and CB2 receptors (which gives us pain relief).
A safe alternative to CBD is Copaiba (which comes from trees in the Amazon Rainforest)
Copaiba’s main chemical component is beta-caryophyllene, a chemical similar to cannabinoids found in cannabis that may protect nerve cells and have benefits for the cardiovascular and immune systems.* However, while caryophyllene is responsible for some of the bioactive properties of Copaiba, many of the other properties of the oil are thanks to the diterpenes uniquely found in Copaiba. Additionally, Copaiba has been administered orally to promote the health of cardiovascular, immune, digestive, respiratory, and nervous systems.