Online retailer Amazon has removed listings for two books claiming to offer cures for autism.

The company said it took down listings for “Healing the Symptoms Known as Autism” and “Fight Autism and Win.” The books promote chlorine dioxide, also known as Miracle Mineral Solution, and chelation as supposed cures for autism.

However, the Food and Drug Administration has warned that there is no cure for autism and products or treatments professing to do so may “carry significant health risks.”

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A representative for Amazon did not respond to questions about why the books were removed or whether the retail giant will take broader action to address content making dubious claims about autism.

A search for “autism cure” on the site continues to bring up hundreds of results.

According to the Centers for Disease Control and Prevention, there are no medications to treat or cure autism’s core symptoms but early intervention can improve outcomes. Nonetheless, the agency said research shows that as many as 10 percent of parents of kids with autism “may be using a potentially dangerous treatment.”

Amazon’s decision to remove the books from its website comes just days after Facebook issued a new policy aimed at preventing the spread of misinformation about vaccines on its platform.

A 1998 study sparked concerns about a link between autism and the measles, mumps and rubella vaccine, but the research was retracted in 2010 and medical experts say there is no association between vaccines and autism.