Researchers found that in all but one case, the average vitamin content of vitamin supplements marketed for infants and children exceeded what's recommended, Fox News reports.

For the new study, Michael Madden and his colleagues pulled information from labels of dietary supplements from a government database in July 2013. Madden is the study's lead author from the Lake Erie College of Osteopathic Medicine in Erie, Pennsylvania.

They reviewed the labels of 21 supplements intended for use among infants younger than 12 months old and 172 supplements intended for use among kids between 12 months and four years old.

Overall, the researchers looked at nine individual vitamins in the supplements intended for infants and 14 vitamins in the supplements intended for older kids.

They found vitamin D was the only vitamin that wasn't listed in amounts above the RDA in products made for both age groups.

In supplements made for older children, vitamin C levels were about five times the recommended amount.

Duffy MacKay, a  senior vice president of scientific and regulatory affairs at the Council for Responsible Nutrition, a trade association representing dietary supplement manufacturers and ingredient suppliers, in Washington, D.C, pointed out that the new research is based on a survey of supplement labels and did not identify or associate any health concerns with the use of the children's products.