@ Ferryman
Amaral seems to be saying that there was a controversy as to whether Calpol contained an antihistamine with a sedative effect. And that that was why it was used in the UK. He then goes on to talk about Calpol Night...
What on earth was he on about?
As far as I'm aware, Calpol doesn't contain an antihistamine.
Yes, I interpreted Amaral's meaning the same as yours and I think I actually know what he's driving at.
There actually
is a mistaken belief among parents that calpol has some kind of sedative property.
That belief (almost certainly) stems from parents watching a fretful and restive toddler settle and drop off to sleep after being given a dose of calpol.
In fact, the painkiller kills the pain, and children, like adults, sleep better free of pain than in pain. So they settle and drop off to sleep, nurturing the (mistaken) belief among some parents that calpol has some sort of sedative effect.
I think that's reflected in Amaral referring to calpol (not
night) as a
sleeping solution