President Donald Trump on Monday suggested that acetaminophen use during pregnancy — as well as childhood vaccines — could increase the risk of kids developing autism spectrum disorder.

Kenvue, a two-year-old spinoff from Johnson & Johnson, is confronting a public-relations nightmare as President Trump and others suggest unproven links between the pain reliever and autism.

Kenvue's shares climbed 6% on Tuesday, rebounding from a record low hit in the previous session, as analysts pointed to the lack of new scientific evidence from the White House to support President Donald Trump linking the drugmaker's popular pain reliever Tylenol to autism.

The work of epidemiologist Ann Bauer and her co-authors was cited by President Trump in remarks linking Tylenol or acetaminophen with an increased incidence of autism.

His administration had just highlighted a link between the use of a common pain-relieving drug Tylenol (acetaminophen)—also known as paracetamol—and autism and ADHD. Mr Trump is certain that the drug is dangerous for children and has few real benefits.