Parents looking for cold and flu medicine for their children are seeing a lot of empty shelves.

The faster start to the flu season along with cases of RSV and other respiratory illnesses have created a surge in demand for Children's Tylenol and other medicines. Many stores like Meijer, CVS, Walgreens and Kroger are putting limits on how many people can buy. Doctors and other experts say the problem could persist through the winter cold-and-flu season.

Drugmaker Johnson & Johnson says it is not experiencing widespread shortages of Childrens Tylenol, but the product may be less readily available at some stores. The company said it is running its production lines around the clock.