OLYMPIA, Wash. -- Washington officials say they plan to require a new "Not For Kids" label on edible marijuana products sold at the state's legal pot shops.

The symbol , chosen by the Washington Poison Center, features a bright red hand held up in a "stop" gesture, accompanied by the words "Not For Kids" with an emergency number to call.

Dr. Alexander Garrard, the poison center's managing director, says the center has received more than 150 calls about marijuana exposure so far this year.

Washington's Liquor and Cannabis Board initially said it would require a "Mr. Yuk" sticker on pot products to deter children from accidentally ingesting them. That drew objections from some marijuana producers and retailers. The board says the new symbol was developed with their input as well as suggestions from prevention specialists.

Joan Gibson's answered calls for help with the Poison Center for 29 years.

She has seen a steady increase in calls from parents whose children have ingested marijuana.

"We have panicked, sometimes we have worried, we have guilty, we hear it all," said Gibson.

She expects the labels to make a difference and thinks fewer children will be exposed to pot.

Gibson hopes it means fewer calls from upset parents.

"There have been times where we put the caller on hold and cry right along with them," said Gibson.

The board expects the label to be required beginning next January.

The Associated Press contributed to this report.

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