The Tennessee Poison Center has seen an increase in calls from parents whose children have eaten their delta-8 tetrahydrocannabinol products. These are also known as delta-8 THC. Some children have had to go to the emergency room, or even had to stay in the hospital. Doctors want parents to know that they should keep all cannabis products stored out of kids' reach.

"These are dangerous for children," said Dr. Rebecca Bruccoleri, medical director of the Tennessee Poison Control Center and an assistant professor of clinical medicine in the Division of Clinical Pharmacology at Vanderbilt. "Parents need to keep them up and locked away — children are going to be attracted to them because they look like candy."

Here's what you need to know about delta-8 THC — and how to keep your family safe.