Health Secretary Robert F. Kennedy Jr. and other officials announced on Sept. 22 that acetaminophen, the active ingredient in Tylenol, may be associated with autism, a disorder with a wide range of symptoms. They also said that folinic acid, also known as leucovorin, looks like a promising therapy for autism.

Here’s what to know about the new announcement, autism, and folinic acid.

Tylenol Link

Officials said the available evidence is sufficient with regard to acetaminophen (also known as paracetamol) and neurodevelopmental disorders to issue a new warning against using acetaminophen during pregnancy.