Best medicine to actually stop a cough?

[WhoeverYouWantMeToBe]

Got stinking cold and delightful accompanying throaty cough, which isn't productive just irritating. Are there ANY medicines or home remedies that actually work? Tried a few but after about ten minutes of blissful silence I am back to barking again. I am going back to work tomorrow and will annoy the hell out of my colleagues if nothing works.

cough supressants, such as pholcodene, available OTC

having a baby did for mine
was coughing to the point of choking went into hosp to have my DD no cough after

spoonful of sugar - add 2-3 drops of vinegar then down in one go. Tastes weird/wonderful/vile but works !

some versions of Benylin

Pholcodine works a treat for me

Spoon of honey works a treat.

Vicks Chloraseptic spray. I don't know why but it works.

Night nurse (only at night!)
Not sure if it stops you coughing or just renders you unconscious but hey, it helps

White horehound tincture. I get mine from Baldwins online but other places must do it. Great for shifting a lasting cough after the main cold symptoms have gone. 10 drops in a finger of water twice a day.