Trump against paracetamol, the scientific community rises up

AIFA also ruled out any new evidence justifying changes: "Paracetamol can be used during pregnancy, if clinically necessary, at the lowest dose and for the shortest possible time."

Experts reacted harshly. The Autism Science Foundation called the statements "dangerous" and "minimized the complexity of autism." President Alison Singer added: "There is no new data, no studies, no scientific conferences to justify such an announcement. It is misleading for families."

The Coalition of Autism Scientists emphasized that the cited data "do not support the claims that Tylenol causes autism and that leucovorin is a cure," accusing the administration of stoking "fear and false hope."

In Italy, the Italian Society of Child and Adolescent Neuropsychiatry (Sinpia) also expressed "deep concern" over claims it deemed "devoid of any real scientific basis." President Elisa Fazzi recalled that "autism is a complex and multifactorial disorder, with no single, certain causal factor."

On the economic front, the storm was not long in coming. Shares of Kenvue, the company that makes Tylenol, plunged 7.5% immediately after the press conference. The following day, however, they recovered almost all of their losses, closing up 5% in pre-market trading.