The maker of Purell hand sanitizer said it will comply with a warning letter issued by the U.S. Food and Drug Administration over the companys unproven claims that its products can prevent viruses like Ebola, the norovirus and influenza.

The FDA, in a letter dated Jan. 17 , threatened legal action against Purells maker, Gojo Industries, should it not immediately correct statements about its products on the companys website and social media accounts, which the FDA said violate sections of the Federal Food, Drug, and Cosmetic Act.

The FDA specifically challenged claims on Purells website that its alcohol-based products are proven to reduce student absenteeism by up to 51% and that they help prevent contracting the flu, while also admitting that the FDA does not allow hand sanitizer brands to make claims about viruses.