The safest way to take CBD is orally, as a tablet, chewable, or tincture (a concentrated liquid typically administered with a dropper). Steer clear of any illegally sold synthetic CBD products, sometimes called "spice" or "bath salts." These products have induced psychotic reactions in some people and pose a major health risk.
For adults, CBD appears to be a very safe product. CBD does produce side effects for some people, including nausea, fatigue, and irritability. It may also interact with certain medications, so always check with your doctor before use.
But for children under age 21 it’s a different story. It’s also not clear if any amount of CBD is appropriate for children.