is this where Amaral got his info from? We can add diligent researcher to his list of talents then.
From here maybe?...
https://www.theguardian.com/lifeandstyle/2019/jun/04/why-parents-are-addicted-to-calpol"In 2007 Johnson & Johnson introduced a new product: Calpol Night, for children aged two years and up,
with added antihistamine, to explicitly aid sleep. But in 2009 the MHRA ruled that 36 different medicines, including Calpol Night, should no longer be given to children under six: research had shown them to be of limited use in younger children, and linked them to side effects such as disturbed sleep and hallucinations. Even though Johnson & Johnson could have continued to market it for older children, Calpol Night was quietly withdrawn in 2010".........
....... "The fame of Calpol is so great that it was even dragged into the investigation of Madeleine McCann’s disappearance in 2007. The Portuguese police were under pressure to come up with new leads, and their attention briefly turned to whether Madeleine’s parents, who were doctors, had accidentally killed her while trying to sedate her. Leaks from the investigation appeared in a Portuguese newspaper, claiming an oral dosing syringe had been found in their holiday apartment. The McCanns readily admitted that they occasionally gave their children Calpol, but strongly denied administering anything stronger. There was no basis whatsoever for the theory, which has been completely discredited. But still the Calpol detail was seized on by conspiracy theorists and tabloids alike: the combination of the nation’s most famous missing child and our best-loved children’s medicine was too sensational to resist, even though the most basic research would show that Calpol contains no sedative ingredients at all."