(NewsNation) — President Donald Trump is expected to announce that acetaminophen, the active ingredient in Tylenol, causes autism and tout a little-known drug as a treatment.

The move comes after Health Secretary Robert F. Kennedy Jr. first raised the idea of Tylenol use during pregnancy as a cause of autism, though doctors say the medicine is safe and not linked to the condition. Autism has been a particular focus for Kennedy, who has called the condition an "epidemic."

Trump is expected to highlight the Food and Drug Administration's recent approval of a new form of leucovorin, which the administration is likely to hail as a cure for autism.

What is leucovorin?

Leucovorin is typically used to treat the side effects of high-dose methotrexate, a drug used in chemotherapy and to treat a

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