WASHINGTON (AP) — Liquid nicotine products that look like juice boxes, candies and other kids' snacks came under government scrutiny Tuesday, as health authorities warned they could pose a danger to children.

The Food and Drug Administration issued more than a dozen warnings over the illegal packaging practice, saying it can lead to poisoning if children mistakenly drink the liquids, which are intended for use with e-cigarettes and vaping devices. Exposure to nicotine, even in small amounts, can cause seizures, coma and fatal heart problems in children.

Some of the packages targeted by regulat...