Driverdale - I am prone to this kind of cough myself, and I usually follow the guidance in the NHS website, taking the recommended drug doses.
http://www.nhs.uk/Conditions/Cough/Pages/Treatment.aspx
Also, as murraymints says, propping oneself up in bed at night can help.
If it doesn't clear soon, or you develop any other symptoms, get in touch with your GP.
Sqad, 1. You say you have read my links (and I could provide many others) and you "respect" them, but you don't believe them. Is this correct?
2.If you don't believe there is a ceiling level for paracetamol of 1000 mg in one dose, what are your reasons?
3. To answer your last sentence, I felt obliged to intervene as I was worried that too much paracetamol might be taken by the OP.
Neither of us know what other medication driverdale is on.
I have every sympathy for his situation, but cannot see how taking a dose that is above that usually recommended, and which will not give him any better pain relief, will help.