STUDIO CITY, LOS ANGELES (KABC) — As Halloween approaches, experts are warning parents about misleading marijuana edibles after more than 17 students were medically evaluated Thursday after possibly consuming a banned substance that looked like candy.

“They mistake them for candy, they take them and share them with others and they are very dangerous to a young child,” said retired DEA agent Bill Bodner.

This comes after 17 children at Walter Reed Middle School in Studio City had to undergo a medical evaluation after possibly consuming a banned substance that authorities said looked like candy on Thursday.

“It’s really frustrating. You wonder, ‘What are the parents doing at home?’ Are they doing a good job teaching their kids what to avoid?,” said Michael Cameneti, a parent at Walter Reed Middle School.

On Tuesday, five more students at Nobel Charter Middle School in Northridge had to be evaluated after possibly ingesting cannabis edibles.

As candy becomes more common, so do its problems.

Emergency room doctors say they are seeing more and more cases of children who end up in what looks like a fun treat but ends up being a dangerous trip to the hospital.

“Children may be especially sensitive to candy because of their size and weight. A normal dose for an adult can be toxic to a child,” said Dr. Ted Kokosinski, director of the emergency department at Northridge Medical Center.

As Halloween approaches, medical experts say parents need to stay diligent.

“We really want to make sure that as Halloween approaches, kids aren’t accidentally ingesting gummies,” Dr. Kokosinski said.

Law enforcement experts say the concern isn’t really that someone is intentionally handing out edibles on Halloween, but that any candy kids come home with may be mixed in with candy belonging to parents or older siblings.

“You have to watch what your kids eat now, because with this candy, it’s more dangerous than ever,” Bodner said.