FORT WASHINGTON, Pa. -- Bottles that were supposed to contain Children's Motrin grape chewable ibuprofen tablets might mistakenly contain an adult dose of a different kind of over-the-counter painkiller.

McNiel Consumer and Specialty Pharmaceuticals says the bottles might mistakenly contain eight-hour extended release Tylenol Geltabs.

The adult product contains an adult dose of acetaminophen.

So far, two mislabeled bottles have been identified, but no injuries have been reported as a result of this issue.

The children's product is a round, purple tablet with a grape smell with the letters MO and the number 50 on the tablet surface. The adult product is a shiny red-and-white, gelatin-coated tablet with "8 Hour" printed in blue on either the red or the white side. See pill comparison below.

The suspect bottles were distributed nationwide to wholesale and retail customers between Feb. 5 and April 1.

The bottles are labeled as containing 24 tablets, and the manufacturing lot number is "Exp 1/06 JAM108." Anyone identifying one of the bottles is asked to contact McNeil's Consumer Relationship Center at (800) 962-5357. Parents who believe their children may have taken Tylenol 8-Hour Geltabs, believing them to be Children's Motrin Grape Chewable Tablets, should contact their doctor immediately.

According to the American Academy of Pediatrics, a child acetaminophen overdose can lead to nausea and vomiting, abdominal pain and liver failure.

For more information, call (800) 962-5357 or visit motrin.com.