NEW YORK (AP)  FedEx Corp. has pulled its "Wizard of Oz'' commercial that debuted on the Super Bowl after hearing complaints that it may give youngsters the impression that it was okay to "huff'' inhalants. 

The commercial mixed clips from the movie classic with images of a FedEx truck delivering helium-filled balloons to three Munchkins whose voices inexplicably sank as they serenaded the newly arrived Dorothy. Their high pitch is restored after they inhale helium from the balloons. 

Spokeswoman Carla Boyd said the Memphis-based delivery company pulled the ad from the planned commercial rotation on Feb. 14 after it had been running for about two weeks. She said its ad agency is looking "at possibilities for revising the spot.'' 

"We had some individuals contact us and we want to be responsive to our customers,'' she said, declining to be specific about the number of complaints. 

Among those who asked that the ad be withdrawn was Harvey Weiss, director of the National Inhalant Prevention Council, a Texas-based organization that works to discourage the practice of "huffing'' inhalants to get high. 

Weiss said his group began getting calls and messages about the ad soon after it was shown on the Super Bowl telecast on Jan. 30. 

"They felt it sent the wrong message to young people that it was okay to huff and was fun to huff and to put some sort of gas into your body,'' he said. 

He said he called FedEx the next day and asked that the ad be pulled. He said he considered it a "courageous decision on their part to pull it'' given how much the company had probably invested in creating and running the ad. 

It cost an average $2.2 million just to run a 30-second ad on the Super Bowl. FedEx wouldn't disclose what it cost to produce the commercial. 

Boyd said FedEx had consulted with national health and toxicology officials before making the commercial and was assured that helium was not a drug and was nontoxic and that it posed no health threat. 

"We are just waiting for our ad agency to come back to us,'' she said, adding there was no timetable for making a decision on what to do with the ad.