Is melatonin safe for kids? Doctor shares concerns around possible side effects for children.

With daylight saving time quickly approaching, many parents are worried about their kids losing an hour of sleep as clocks "spring forward." But are melatonin supplements a safe option to help them sleep?

One study shows 18.5% of children aged 5 to 9 sometimes take melatonin for sleep, and 19% of adolescents as well.

Melatonin "does seem to be safe for short term use," Dr. Céline Gounder, CBS News medical contributor and editor-at-large for public health at KFF Health News, said on "CBS Mornings" Friday, But she adds there are a few things to be aware of.