Before Trump touted the drug leucovorin for autism, these families had already tried it

The drug leucovorin was thrust into the national spotlight by President Donald Trump in a rambling press conference about autism.

Last winter, Brian Noonan read online that some doctors were prescribing an obscure drug, typically given to cancer patients, for autism. Curious, he looked into it for his son Benjamin, who had just been diagnosed with autism in October.

“We jumped on it,” Noonan said. “It felt right and it made sense.”

The medication was leucovorin, also called folinic acid. It’s a synthetic form of vitamin B9 or folate, which the body needs to make healthy blood cells. During pregnancy, folate is important to reduce the risk of birth defects.

Last Monday, the drug was thrust into the national spotlight by President Donald Trump in a rambling press conference about autism that mainly focused on the president and Health Secretary Robert F. Kennedy’s claim that taking acetaminophen during pregnancy could cause autism. Trump briefly mentioned that an “existing drug” — referring to leucovorin — may help with certain symptoms of autism.

For those in the autism community, leucovorin is not new. Dr. Richard Frye, a behavioral child neurologist in Phoenix has studied leucovorin and autism for two decades. He made clear that it is not a cure for autism and that more research is needed. He does, however, prescribe it to some people with autism.