[Margaret Pilkington]

Nope, that does not ring any bells for me.
If we had a cough Ma would trot along to Thornbers chemists and get the chemist to make up a cough bottle....brown liquid or sticky sweet cherry.
The brown tasted horrible and the cherry...well it never saw cherries...the closesti t came to cherry was the colour.
Venos was available, but the bottles were to small(and too eear) for the industrial use that our large family needed.