European Union and British health agencies confirmed the safety of paracetamol during pregnancy, disputing a warning from US President Donald Trump linking the popular pain medication to autism.
The World Health Organisation said evidence of a link remained inconsistent and urged caution in drawing conclusions.
Trump had on Monday linked autism to childhood vaccine use and the taking of Tylenol by women when pregnant, elevating claims not backed by scientific evidence to the forefront of US health policy.
The European Medicines Agency said on Tuesday there was no new evidence that would require changes to the region's recommendations for the use of paracetamol, known as Tylenol in the United States, during pregnancy.
"Available evidence has found no link between the use of paracetamol