Walgreens has limited online purchases to six over-the-counter fever reducers per transaction, but it does not have an in-store purchase limit.Young children are particularly vulnerable to RSV, which has hospitalized more than 4 out of every 1,000 children younger than 5 this season, according to data from the US Centers for Disease Control and Prevention.The association represents three major manufacturers of children’s pain and fever medications: Johnson & Johnson, the company that makes Tylenol; Haleon, maker of Advil; and Perrigo, which manufacturers store brands.Her group is happy that numbers from the CDC suggest that RSV and the flu may have peaked and that infections are starting to come down.But we also have been talking to our manufacturers, and they’re hopeful as we get over the peak that this will that the supply will catch up with the demand,” she said."